Connect with us

Hawaii

Hawaii to remove famed ‘stairway to Heaven’ created by the Navy 80 years ago after hikers and influencers refused to abide by its closure

Published

on

Hawaii to remove famed ‘stairway to Heaven’ created by the Navy 80 years ago after hikers and influencers refused to abide by its closure


Hawaii’s famous yet treacherous Ha’ikū Stairs, known as the Stairway to Heaven, are being officially removed after social media influencers repeatedly ignored safety warnings to complete the illegal hike. 

The 3,922 stairs wind up a steep, narrow ridge to the Ko’olau summit, offering stunning views from more than 2,800 feet above sea level. They were built more than eight decades ago by the U.S. Navy during World War II.  

But while the perilous route has been closed to the public for decades, hikers and influencers have continued to sneak pass security guards and trespass on private property.

Honolulu Mayor Rick Blangiardi described the decision to remove them as ‘long overdue’ and comes after numerous rescue operations to save stranded hikers.

Advertisement

‘I can promise you that this was not a capricious decision,’ Blangiardi said in a statement. The removal is expected to take at least six months. 

Hawaii ‘s famous Ha’ikū Stairs, known as the Stairway to Heaven, are officially being removed more than 80 years after the U.S. Navy built it during World War II

While these famous Oahu stairs have been closed to the public for decades, hikers and influencers have trespassed on private property or snuck past security guards to get the Instagrammable snapshots

While these famous Oahu stairs have been closed to the public for decades, hikers and influencers have trespassed on private property or snuck past security guards to get the Instagrammable snapshots

Tourists who undertake early-morning excursions in the hopes of witnessing a sunrise from the ridge of the Ko'olau range, more than 2,800 feet above sea level, hike up the 3,922 stairs that wind up the mountainside

Tourists who undertake early-morning excursions in the hopes of witnessing a sunrise from the ridge of the Ko’olau range, more than 2,800 feet above sea level, hike up the 3,922 stairs that wind up the mountainside

The Honolulu Fire Department reported that it responded to five rescue incidents on the Ha’ikū Stairs between January 2022 and February 2024. 

In October 2022, KHON2 reported that, in the previous 12 years, the Fire Department had saved 118 lives from the steps.

In September, a woman and her dog had to be evacuated from the dangerous trail by a helicopter crew following a 50-foot fall, according to Hawaii News Now. 

And back in 2016, the Honolulu Star-Advertiser reported that two hikers were left stranded for hours in the dark before rescue personnel could access the trail during the day. 

Advertisement

Since 1987, access to the stairway — which was constructed to let military personnel access communication infrastructure on the ridgeline — has been limited. 

Prior to the ban, the U.S. Coast Guard allowed hikers who signed a waiver to use the stairs. 

However, officials later shut this program as a result of ‘vandalism and liability concerns,’ according to the Honolulu City Council.

The removal process is expected to take at least six months

The removal process is expected to take at least six months

In the past, hikers that have attempted to hike the stairway have ended up in precarious incidents in which search and rescue teams had to be deployed

In the past, hikers that have attempted to hike the stairway have ended up in precarious incidents in which search and rescue teams had to be deployed

When the Board of Water Supply in Honolulu decided it no longer needed the area for water, the U.S. Coast Guard handed the property rights for the Ha’ikū Stairs to the utility business in 1999. The city subsequently took ownership of the rights.

While Honolulu repaired some of the stairway for the sake of preservation, it still remained closed to the public. At one point, security guards were sent to guard the stairs to keep hikers away.

Advertisement

But the rise of social media influencers searching for great content has made the trespassing problem worse.

In April 2021, a resolution by the city council calling for the stairs to be torn down cited that social media ‘enabled the posting of illegal directions to the stairs and the sharing of panoramic pictures that have encouraged people from around the world to take the hike.’

Between August 2017 and March 2020, 11,427 people were stopped by police officers stationed around the stairway and surrounding neighborhoods from entering the historical land mark, Honolulu officials reported.

When the Board of Water Supply in Honolulu decided it no longer needed the area for water, the U.S. Coast Guard handed the property rights for the Ha'ikū Stairs to the utility business in 1999

When the Board of Water Supply in Honolulu decided it no longer needed the area for water, the U.S. Coast Guard handed the property rights for the Ha’ikū Stairs to the utility business in 1999

While Honolulu repaired some of the stairway for the sake of preservation, it still remained closed to the public. At one point, security guards were sent to guard the stairs to keep hikers away

While Honolulu repaired some of the stairway for the sake of preservation, it still remained closed to the public. At one point, security guards were sent to guard the stairs to keep hikers away

The need for interesting and controversial content by social media influencers has made the trespassing problem worse

The need for interesting and controversial content by social media influencers has made the trespassing problem worse

‘Most of these people are thrill seekers because they want to say that they hiked here,’ vice chair of the Honolulu City Council Esther Kia’āina told the Washington Post. She represents the district where the Ha’ikū Stairs are located.

The hike to the stairway is just as dangerous for the rescue team as it is for the hikers, she said. It’s also costly, as each rescue costs between $10,000 and $20,000.

Advertisement

‘It’s very windy up there, it’s treacherous in fact,’ she said. ‘I just don’t think people take that into account.’

As tourism continues to increase post-pandemic, the city council said the removal of the stairs was the ‘only viable solution’ to stop the hikers continuing to trespass and to remove the city’s liability.

According to Mayor Blangiardi’s statement, the final decision to remove the steps was made following months of deliberation with the Honolulu community and the city council. 

The hike to the stairway is just as dangerous for the rescue team as it is for the hikers, she said. It's also costly, as each rescue costs between $10,000 and $20,000

The hike to the stairway is just as dangerous for the rescue team as it is for the hikers, she said. It’s also costly, as each rescue costs between $10,000 and $20,000

The final decision to remove the steps was made following months of deliberation with the Honolulu community and the city council.

The final decision to remove the steps was made following months of deliberation with the Honolulu community and the city council.

The operation formally started on Wednesday, and later this month, 664 stairway modules – seven-foot portions of stairs – will be removed. A helicopter will then descend on each module to begin disassembly. 

But while the stairs will no longer be there, the view isn’t going anywhere.

Advertisement

But while the stairs , the view isn’t going anywhere.

‘The beauty of the mountain there is still going to be there,’ Kia’āina said.



Source link

Hawaii

New Report Illuminates Geothermal Cooling Potential in Hawaii – CleanTechnica

Published

on

New Report Illuminates Geothermal Cooling Potential in Hawaii – CleanTechnica



Support CleanTechnica’s work through a Substack subscription or on Stripe.


University of Hawaii at Manoa and Lawrence Berkeley National Laboratory Teamed up To Analyze Feasibility of Geothermal Cooling Technologies

By Justin Daugherty, NLR

In areas with geologically recent volcanic activity and ample underground water flow, like the Hawaiian Islands, geothermal energy technologies present options to augment the electric grid.

Advertisement
Oahu’s steep terrain and highly permeable volcanic rock enable large groundwater flow, a must for successful ground heat exchangers in Hawaii, where load is cooling dominated. Shown here is Kaena Point, the western tip of Oahu’s North Shore. Photo from Christine Doughty, Lawrence Berkeley National Laboratory.

To investigate building cooling and energy efficiency options, the University of Hawaii at Manoa’s Hawaii Groundwater and Geothermal Resources Center collaborated with scientists at Lawrence Berkeley National Laboratory through the U.S. Department of Energy’s Energy Technology Innovation Partnership Project (ETIPP).

Managed by the National Laboratory of the Rockies (NLR), formerly known as NREL, ETIPP supports remote, coastal, and island communities with technical assistance and energy planning to help them build more reliable and affordable energy systems. Communities apply for up to 24 months of technical assistance, and those communities drive the scopes and focuses of their energy projects.

University of Hawaii at Manoa joined the program in 2022 with a desire to explore geothermal options, and a new report from this project details the feasibility of developing shallow ground heat exchangers (GHEs) across Oahu and at a specific site on the island for cooling.

Geothermal heat pumps take advantage of relatively constant temperatures just under the earth’s surface, using GHEs to exchange heat with the earth. Through a system of looping pipes in the shallow ground, GHEs can move heat from a warm place to a cooler place, like how a refrigerator functions.

“High-temperature geothermal, which requires deep drilling, is required to produce electricity, but low-temperature geothermal such as GHEs, which can be accessed much nearer the ground surface, can be used for building heating and cooling, greatly lessening loads on the electric grid,” said Lawrence Berkeley National Laboratory’s Christine Doughty, staff scientist.

Advertisement

“I believe both types of geothermal have potential to be an asset to Hawaii,” added Nicole Lautze, founder and director of the Hawaii Groundwater and Geothermal Resources Center.

Determining Geothermal Cooling Favorability in Hawaii

In open-loop geothermal systems, wells are drilled to extract and inject groundwater, allowing the movement of thermal heat to and from the earth. These GHEs use cooler ground water from outside the system for the cooling process and expel the warmer water afterward.

In contrast, closed-loop GHE systems continually circulate a heat-transfer solution through pipes, which transfers heat to and from the ground via thermal conduction. Groundwater needs to have temperatures that are low enough to effectively cool buildings, and groundwater flow in a GHE system works to remove built-up heat.

Hawaii has far greater needs for cooling than for heating—meaning that GHEs would add heat to the subsurface and cause the systems to not function as desired. That is where groundwater comes in: It replaces heated water from the boreholes and maintains the functionality of the GHE system. Sufficient groundwater flow, then, is essential to the considerations for GHE deployment. GHE systems may not be deployed in areas with restricted watersheds or where there is subsurface production of freshwater. Therefore, closed-loop systems may be a more reasonable option in some locations.

Left: A geographic information system map of Oahu depicts different soil permeability zones (“Ksat_Class” indicates the potential speed of groundwater flow). Right: Locations of U.S. Department of Defense lands and public and private schools—potential customers for GHE—are shown.

Numerous factors help determine whether a community or business may consider GHEs. Areas with older homes may lack efficient energy systems, and some organizations, like schools or government buildings, may prioritize more adaptive heating and cooling. Cultural considerations are also very important, and a new NLR report incorporates Hawaii communities’ perspectives on geothermal.

Economic factors are another big consideration, with the expense of deploying a system versus energy savings playing into overall cost. Modeling revealed that electricity and energy transfer demand decreased, and such reductions contributed to cost savings. Longer loan terms may help ease deployment expenses for geothermal systems.

Advertisement

ETIPP researchers factored the above parameters into their analysis to develop favorability maps for closed-loop and open-loop GHE systems. They used specific geographic information system layers with 11 attributes—including elevation, geology, and soil permeability—to develop an overall favorability map for GHEs on Oahu.

For the site-specific feasibility analysis at the University of Hawaii at Manoa’s Stan Sheriff Center, researchers used a hydrogeologic model to analyze groundwater flow of a closed-loop system at the site. Restrictions on water quality—mandating that groundwater must be left in its natural state—diminished the available area for GHE system deployment across the island, while many coastal areas showed high favorability. Overlays showing potential customers and restricted areas sharpened the maps.

This closed-loop favorability map shows restricted areas where GHE development is not possible. Pixels colored dark green—the top of the color spectrum table—indicate land that is more favorable to geothermal energy.

Geothermal Cooling Potential at University of Hawaii at Manoa

From the island-wide analysis, ETIPP analysis homed in and found that the Stan Sheriff Center at the University of Hawaii at Manoa, a building with a high cooling load in an area with lots of open space surrounding it, could make a good candidate for site-specific analysis of GHE technology.

Researchers used a hydrogeologic model to analyze a potential closed-loop system at the site. They modeled groundwater and heat flow, analyzed subsurface heat flow, and completed a techno-economic analysis.

Analysis without groundwater flow showed that the GHE system may operate normally in the first year, but heat buildup would increase water temperatures significantly after that, and without groundwater to sweep heat away, there would be increased chiller demand in years two through six. Modeling that incorporated groundwater flow—with similar conditions as the Stan Sheriff Center—showed that heat would be effectively swept away from the borefield, which would enable successful GHE operation for at least 10 years. Thus, including groundwater in analysis and planning—coupled with low interest loan rates and high capital investment—may provide economic benefits to the university.

The Stan Sheriff Center (white dome in the center of the image) is located at the base of the Koolau Range. Image from Google Earth.

Cold seawater may be an option for cooling-source systems, the analysis concluded, and such a system already operates at the Natural Energy Laboratory of Hawaii. The report authors encouraged further study.

As in Hawaii, ETIPP continues to help communities explore geothermal and other technologies to help meet their energy needs through in-depth, collaborative investigation of potential solutions.

Advertisement

“This ETIPP project established a strong collaboration with LBNL and the foundation for what I hope is additional grant funding to explore the potential of GHEs on the UHM campus and across the state to cool buildings and reduce load on Hawaii’s grid,” Lautze said.

The U.S. Department of Energy’s Energy Technology Innovation Partnership Project (ETIPP) is a community-led technical support program for coastal, remote, and island communities to access unique solutions and increase energy reliability. By uniting federal agencies, national laboratories, regional organizations, and community stakeholders, ETIPP provides tailored technical support to help communities achieve affordable, reliable solutions to their energy system challenges. This collaborative model leverages the combined expertise and resources of its partners to deliver comprehensive, practical solutions that align with local needs. Learn more about ETIPP.


Sign up for CleanTechnica’s Weekly Substack for Zach and Scott’s in-depth analyses and high level summaries, sign up for our daily newsletter, and follow us on Google News!


Advertisement



 
Advertisement

Have a tip for CleanTechnica? Want to advertise? Want to suggest a guest for our CleanTech Talk podcast? Contact us here.


Sign up for our daily newsletter for 15 new cleantech stories a day. Or sign up for our weekly one on top stories of the week if daily is too frequent.



CleanTechnica uses affiliate links. See our policy here.

CleanTechnica’s Comment Policy

Advertisement





Source link

Continue Reading

Hawaii

Comet Lemmon and Milky Way spotted over Hawaii | Space photo of the day for Dec. 12, 2025

Published

on

Comet Lemmon and Milky Way spotted over Hawaii | Space photo of the day for Dec. 12, 2025


Comet C/2025 A6, better known as Comet Lemmon, was one of the latest icy visitors to swing through our neighborhood of the solar system, leaving astronomers and casual skywatchers equally delighted. For observers in Hawaii, the glow of the Milky Way didn’t dim the streak of light made by this comet passing through.

What is it?

Where is it?

This image was taken atop the volcanic peak Mauna Kea, on the Big Island of Hawaii.

Comet Lemmon could be seen with the naked eye as it streaked across the sky. (Image credit: International Gemini Observatory/NOIRLab/NSF/AURAImage processing: M. Rodriguez (International Gemini Observatory/NSF NOIRLab) & M. Zamani (NSF NOIRLab))

Why is it amazing?



Source link

Continue Reading

Hawaii

Hawaii senator introduces bill to reunite, protect immigrant families

Published

on

Hawaii senator introduces bill to reunite, protect immigrant families


WASHINGTON, D.C. (HawaiiNewsNow) – U.S. Senators Mazie Hirono (D-Hawaii) and Tammy Duckworth (D-Illinois) reintroduced a piece of legislation on Thursday to strengthen protections for immigrant families and address long-standing problems in the family immigration system.

The Reuniting Families Act aims to reduce visa backlogs, boost efficiency across the immigration process, and ensure a fairer, more humane process for immigrant families.

“Immigrant families currently experience unnecessary obstacles and delays due to our country’s broken immigration system, keeping families separated for potentially long periods of time,” Hirono said. “By reducing family-based immigration backlogs and making common sense updates to how we treat families, the Reuniting Families Act will help take the first step in the right direction to keeping families together as they navigate our immigration system.”

According to the senators behind this bill, nearly four million people with approved visa applications are currently trapped in a massive immigration backlog, with many waiting more than a decade to reunite with their loved ones.

Advertisement

“As Donald Trump’s inhumane mass deportation campaign rips apart families and communities across the country, it’s paramount we address the unnecessary barriers in our immigration system that have created backlogs and kept families apart for years,” Duckworth said. “Our legislation would implement commonsense reforms to help end family-based backlogs, which keep too many with approved green card applications stuck in bureaucratic limbo, and help get more families where they belong—together.”

The Reuniting Families Act would shorten delays by recapturing unused visas, rolling them into future years, expanding who qualifies as a family member to include permanent partners, and increasing both the total number of available family preference visas and per-country limits.

The bill would also put a time limit on visa processing, so no applicant has to wait more than 10 years for a visa if they have an approved application.

Click here to read the full bill.

Advertisement



Source link

Continue Reading
Advertisement

Trending