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Recommended This Week

Pressure Ridges - Sea to Sky Hiking Terms

Pressure Ridges                                                     Sea to Sky Hiking Terms

Pressure Ridges: wavelike ridges that form on a glacier normally after a glacier has flowed over icefalls.  Pressure ridges are a beautiful and hostile looking feature of glaciers that, when approached, become menacingly huge and dangerous.  The image below is looking across from Panorama Ridge at the valley of glaciers that stretch down to Garibaldi Lake.

Pressure Ridges Across from Panorama Ridge

Panorama Ridge is a stunning viewpoint that looks across to immense pressure ridges across the valley.  Click the image below to see an aerial video of Panorama Ridge.

Panorama Ridge - Sea to Sky Trails

The image below shows the stunning pressure ridges on the Wedge Glacier at Wedgemount Lake.  This is an aerial video of the glacier, from the glacier window to up and along the glacier.

Pressure Ridges - Aerial Video

Wedgemount Lake is an alpine paradise in Garibaldi Provincial Park, Whistler.  Just a short, though challenging, 7 kilometre trail gets you to this amazing place.

Rethel Mountain - Sea to Sky Trails

Wedgemount Lake itself is a magnificent destination for a day hike or spectacular overnight beneath the dazzling mountain peaks and stars.  Many sleep under the stars on one of the many beautiful tent platforms that dot the landscape.  Solidly built, wooden tent platforms are everywhere you look at Wedgemount Lake.

Glossary of Hiking Terms                                    Squamish Hiking Trails

Ablation Zone: the annual loss of snow and ice from a glacier as a result of melting, evaporation, iceberg calving, and sublimation Ablation Zone - Squamish Hiking Termswhich exceeds the accumulation of snow and ice. Located below the firn lineFirn originated from Swiss German and means "last year's snow".  It has been compacted and recrystallized making it harder and more compact than snow, though less compact than glacial ice.  An excellent place to see an ablation zone is Wedgemount Lake in Garibaldi Provincial Park in Whistler.  The Wedgemount Glacier has been receding for decades.  In the 1970's the glacier terminated with a steep and vertical wall of ice at the shores of Wedgemount Lake.  Today the glacier terminates a couple hundred metres above Wedgemount Lake.

Overlord Glacier Ablation Zone

Accumulation Zone: the area where snow accumulations exceeds melt, located above the firn line.  Snowfall accumulates faster than melting, evaporation and sublimation removes it.  Glaciers can be shown simply as having two zones.  The accumulation zone and the ablation zone.  Accumulation Zone - Squamish Hiking TermsSeparated by the glacier equilibrium line, these two zones comprise the areas of net annual gain and net annual loss of snow/ice.  The accumulation zone stretches from the higher elevations and pushes down, eventually reaching the ablation zone near the terminus of the glacier where the net loss of snow/ice exceeds the gain.  The Wedgemount Glacier in Garibaldi Provincial Park in Whistler is an ideal place to see an accumulation zone up close.  From across Wedgemount Lake you can see the overall picture of both the accumulation zone and ablation zone of a glacier.  The Wedgemount Glacier is also relatively easy and safe to examine Aiguille - Squamish Hiking Glossaryclosely and hike onto.  The left side of the glacier is frequented in the summer and fall months by hikers on their way to Wedge Mountain and Mount Weart.

Aiguille: a tall, narrow, characteristically distinct spire of rock. From the French word for "needle". Used extensively as part of the names for many peaks in the French Alps.  Around Whistler in the alpine you will find several distinct aiguilles.  Black Tusk in Garibaldi Provincial Park could be called an aiguille, however its long and prominent history has given it another descriptive term of "tusk".  You will find aiguilles on many hikes in British Columbia.

Alpine Zone or Alpine Tundra: the area above the treeline, often characterized by stunted, sparse forests of krummholz and Alpine Zone - Squamish Hiking Termspristine, turquoise lakes.  The Sproatt alpine is an excellent example of an alpine zone in Whistler.  Dozens of alpine lakes, rugged and rocky terrain and hardy krummholz trees everywhere you look.  The hostile, cold and windy climate in the alpine zones around Whistler make tree growth difficult.  Added to that, the alpine areas are snow covered the majority of the year.  Other good places to explore alpine zones in Whistler are Wedgemount Lake, Blackcomb Mountain, Whistler Mountain, Black Tusk and Callaghan Lake.

Highpointing: the sport of hiking to as many high points(mountain peaks) as possible in a given area.  For example, highpointing the lower 48 states in the United Highpointing - Squamish Hiking Termsstates.  This was first achieved in 1936 by A.H. Marshall.  In 1966 Vin Hoeman highpointed all 50 states.  It is estimated that over 250 people have highpointed all of the US states.  Highpointing is similar peakbagging, however peakbagging is the sport of climbing several peaks in a given area above a certain elevation.  For example, a highpointer may climb the summit of Wedge Mountain, the highest peak in the Garibaldi Ranges, then move to another mountain range.  Whereas a peakbagger may summit Wedge Mountain, then Black Tusk, Panorama Ridge, Mount Garibaldi and many more high summits in the region.

Highpointing Aerial Video

Hoary Marmot: the cute, invariably pudgy, twenty plus pound ground squirrels that have evolved to live quite happily in the hostile alpine areas of much of the world. In the northwest of North America, marmots have a distinct grey in their hair, a hoary colour, so have been named hoary marmots. They manage to survive quite happily in the alpine, largely by hibernating for 8 months of the year and largely for having a surprisingly varied array of food in such an inhospitable environment. They live off of grasses, berries, lichens, mosses, and roots and flowers. Hoary Marmot - Squamish Hiking TermsAnd live quite well it seems, as they always look chubby, which has one great drawback. They are sought after by bears and wolves. They have a wonderful defense system though. They are constantly on watch and whistle loudly at the first sign of danger, alerting the colony. The prevalence of these "whistlers" as they came to be locally called, in the early days of London Mountain resulted in it's name being changed to Whistler Mountain in the 60's. Hiking on Whistler, Blackcomb or Wedgemount Lake in the summer will almost guarantee an encounter with a chubby, jolly little whistler marmot..

Ice Mill: a hole in the glacier formed by swirling water on the surface.  These can be large enough for a human to slip into.

Krummholz - Squamish Hiking TermsIcefalls: a jumble of crisscross crevasses and large ice towers that are normally found where a glacier flows over a slope with a gradient change of 25 degrees or more.

Krummholz: low-stunted trees found in the alpine.  From the German “twisted wood”.  Continuous exposure to hostile, alpine weather causes trees to form in bizarre and stunted ways.  Many types of trees have formed into bizarre krummholz trees including spruce, mountain pine, balsam fir, subalpine fir, limber pine and lodgepole pine.  The lodgepole pine is commonly found in the alpine regions around Whistler.

Longitudinal Crevasses: form parallel to the flow of a glacier.  These are normally found where a glacier widens.

Massif: a cluster of mountains. A section of a planet's crust that is demarcated by faults or flexures.Nunatuk - Squamish Hiking Terms

Moat: is a wall formed at the head of a glacier.  Formed from heat reflected from the valley wall.

Moraine (lateral): formed on the sides of a glacier.  Moraine (medial): the middle of a glacier.  Also formed as two glaciers come together or as a glacier moves around a central peak.  Moraine (terminal): formed at the terminus of a glacier.  Moraine (ground): the rocky debris extending out from the terminus of a glacier.

Old Man's Beard - Squamish Hiking TermsNunatuk: a rock projection protruding through permanent ice or snow.  Their distinct appearance in an otherwise barren landscape often makes them identifiable landmarks.  Nunatuks are usually crumbling masses of angular rock as they are subject to severe freeze/thaw periods.  There is a very prominent nunatuk near the glacier window of the Wedge Glacier.  The glacier has been retreating in the past few years, so this massive nunatuk marks the terminus of the glacier now.

Old Man's Beard(Usnea): The lichen seen hanging from tree branches in much of British Columbia.  It hangs from tree bark and tree branches looking like greenish-grey hair.  A form of lichen, usnea can be found world-wide.  There are currently over 85 known species of usnea.

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