Canada’s highest-altitude mountain hut; stone refuge originally built in 1922 by Swiss mountain guides using local quarried stone; later slope instability drove both the 2018 stabilization work and, eventually, the later dismantling decision. GRW matched alpine access methods with practical construction execution: helicopter mobilization, rope-based work positioning, portable drilling and grout systems, careful material control, and close owner coordination. The team adapted field methods to weather, terrain, and access restrictions while maintaining steady progress.
1 month
60 Hollow bar soil nails installed on a steep slope below the hut
6 techs
Parks Canada
Abbot Pass, Banff National Park, Alberta
Following slope instability identified in 2016, GRW was engaged to stabilize the slope beneath the Abbott Hut, Canada’s highest-altitude mountain hut. Working on a remote ridge with helicopter-only access, GRW installed hollow bar soil nails and associated stabilization works in extreme alpine conditions to reduce immediate risk to the hut and support Parks Canada’s ongoing asset protection planning.
Abbott Hut, built by hand in 1922 from local stone and operated for decades as a backcountry refuge, is a rare alpine heritage asset in Banff National Park. The work was part of a broader effort to respond to worsening instability at the site and protect public, heritage, and operational value at one of Canada’s most exposed mountain facilities.
The foundation support zone and long-term stability of the historic Abbott Hut were at risk, along with the safety of backcountry users, Parks Canada personnel, and the long-term viability of a nationally significant alpine heritage asset.
GRW was engaged because the work combined difficult-access construction, high-angle alpine operations, drilling and grouting capability, and the judgment to execute safely under helicopter logistics, heavy snowfall, and severe terrain constraints.
Remote mountain ridge at approximately 2,925 m / over 11,000 ft; helicopter-only access; steep exposed terrain; tight work areas; over a foot of new snowfall daily through much of the job; cold weather and permafrost-related ground conditions; limited staging and logistics tolerance.
Slope stabilization, drilling, grouting, bolting, helicopter-supported alpine construction. GRW planned and executed a helicopter-supported stabilization program on a steep, snow-affected alpine slope. Crews used rope-access and mountain work methods to position people, drills, grout, and materials, then sequenced drilling and installation to maintain control of access, weather exposure, and slope risk while coordinating closely with Parks Canada.
Helicopter-supported transport, rope-access systems, drill set-up for hollow bar installation, grout plant, air compressor, grout lines, alpine rigging, and cold-weather PPE
Installed to engineered layout/prescription with field-fit adjustments for terrain. Work required disciplined daily planning, safety briefings, and documentation. Specific load-test or acceptance records were not found in the internal sources reviewed.
Parks Canada led the owner side. The work appears to have been executed against engineered slope stabilization requirements with close field coordination between GRW, Parks Canada, and technical stakeholders. Engineer of record not confirmed in the sources reviewed.
Delivered the required stabilization scope in a highly constrained alpine setting and reduced immediate risk to the hut support area. Internal sources confirm a project value of about $1.2M; precise schedule and production quantities were not fully verified in the materials reviewed.
Executed demanding helicopter and high-angle work with disciplined planning, daily coordination, and strong hazard control. Internal marketing/reference material describes the job as completed with a perfect safety record / zero incidents.
Delivered the required stabilization scope in a highly constrained alpine setting and reduced immediate risk to the hut support area. Internal sources confirm a project value of about $1.2M; precise schedule and production quantities were not fully verified in the materials reviewed.
Executed demanding helicopter and high-angle work with disciplined planning, daily coordination, and strong hazard control. Internal marketing/reference material describes the job as completed with a perfect safety record / zero incidents.
Gave Parks Canada a contractor capable of combining technical slope stabilization work with real mountain-construction execution. The project reduced near-term risk at the hut, supported owner decision-making, and demonstrated GRW’s ability to deliver specialized work where conventional access and construction methods were not viable.
The work helped preserve a nationally important public heritage resource and reduced risk in a sensitive national park setting. Beyond the technical scope, it protected public interest in a remote alpine landmark and supported responsible stewardship of a historic site under active geohazard pressure.
This project reflects GRW’s core approach: take on difficult work that matters, plan it rigorously, execute it safely, and bring specialized field capability to protect people, infrastructure, and important places. It is a strong example of GRW combining technical depth, disciplined execution, and respect for environmental and public context.
Canada’s highest-altitude mountain hut; stone refuge originally built in 1922 by Swiss mountain guides using local quarried stone; later slope instability drove both the 2018 stabilization work and, eventually, the later dismantling decision.
When your project is high elevation, high risk, or both, you want the most experienced team on the job. Our seasoned technicians are ready to take on the most complex geohazard projects to keep your site and community safe.
