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Recommended This Week

Ablation Zone - Sea to Sky Hiking Terms

Ablation Zone                                                         Sea to Sky Hiking Terms

Ablation Zone: the annual loss of snow and ice from a glacier as a result of melting, evaporation, iceberg calving, and sublimation which exceeds the accumulation of snow and ice. Located below the firn line.  Firn 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.

Ablation Zone - Wedgemount Glacier

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.

Ablation Zone - Wedgemount Glacier

Another famously stunning glacier in Garibaldi Park is Overlord Glacier(pictured below).  Hiking from Whistler Village up the Singing Pass Trail (14k) to Russet Lake gives you a great vantage point to this marvellous monster.  The adventurous head down the valley just 2 kilometres to see Overlord Glacier up close.  Click the image here to see an aerial video of Adit Lakes, Overlord Glacier, The Fissile and Russet Lake.

Ablation Zone Overlord Glacier

The glaciers around Whistler have been receding quite dramatically in recent years.  The Wedge Glacier ended at the shores of Wedgemount Lake just two decades ago.  Old pictures of the lake show a massive wall of blue ice at the far shore of the lake.  Now you can measure the ablation zone well over a couple hundred metres up the valley.

Russet Lake Aerial Video

Russet Lake(pictured above) is a fantastic alpine lake that lays at the base of the Fissile.  The Fissile is the strikingly bronze coloured mountain so visible from Whistler Village.  From the Village look into the distance at the Peak to Peak hanging between Whistler and Blackcomb and you will see the Fissile.  Its pyramid shape in the distance perfectly separates the two mountains.  Though Russet Lake is not terribly impressive in terms of size or colour, the valley around it is remarkably beautiful.  The colours change from moment to moment in and extraordinary way.

Glossary of Hiking Terms                                    Squamish Hiking Trails

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.

Alpine Zone Aerial Video - Squamish Hiking

Barrier Beach or Island: a land form parallel to the shoreline, above the normal high water level.  Characteristically linear in shape, a barrier beach extends into a body of water.  In Garibaldi Provincial Park at Garibaldi Lake there is an Barrier Beach - Squamish Hiking Termsexcellent example a barrier beach leading toward the Battleship Islands.  The West Coast Trail has an ever-moving barrier beach at the famous Tsusiat Falls camping area.  The broad falls cascade off a sheer cliff and cut a constantly changing path to the ocean.  The barrier beach can only be reached by a precarious log crossing or by wading across the rushing flow of water.  A barrier island can be quite beautiful.  An excellent example is Sea Lion Haul Out Rock along the West Coast Trail.  This enormous, flat topped, solid rock barrier island sits just a few dozen metres from the trail.  Hundreds of sea lions make their home here and provide a constant show for passing hikers.

Bench - Squamish Hiking TermsBench: a flat section in steep terrain.  Characteristically narrow, flat or gently sloping with steep or vertical slopes on either side.  A bench can be formed by various geological processes.  Natural erosion of a landscape often results in a bench being formed out of a hard strip of rock edged by softer, sedimentary rock.  The softer rock erodes over time, leaving a narrow strip of rock resulting in a bench.  Coastal benches form out of continuous wave erosion of a coastline.  Cutting away at a coastline can result in vertical cliffs dozens or hundreds of metres high with a distinct bench form.  Often a bench takes the form of a long, flat top ridge.  Panorama Ridge in Garibaldi Park is an excellent example of a bench.  The Musical Bumps trail on Whistler Mountain is another good example of bench formations.  Each "bump" along the Musical Bumps trail is effectively a bench.

Bench - Squamish Hiking Terms

Bergschrund or abbreviated schrund: a crevasse that forms from the separation of moving glacier ice from the stagnant ice above. Characterized by a deep cut, Bergschrund - Squamish Hiking Termshorizontal, along a steep slope. Often extending extremely deep, over 100 metres down to bedrock. Extremely dangerous as they are filled in winter by avalanches and gradually open in the summer.  The Wedge glacier at Wedgemount Lake is a great and relatively safe way to view bergschrund near Whistler.  At the far end of Wedgemount Lake the beautiful glacier window can be seen with water flowing down into the lake.  From the scree field below the glacier you can see the crumbling bergschrund separate and fall away from the glacier.  Up on the glacier you fill find several crevasses.  Many are just a few centimetres wide, though several metres deep.  Hiking along the left side of the glacier is relatively safe, however the right size of the glacier is extremely dangerous as the bergschrund vary in width and can be measure only in metres instead of centimetres.  Hikers venturing up the glacier are advised to keep far to the left or only at the safe, lower edges near the glacier window.

Bivouac - Squamish Hiking TermsBivouac or Bivy: a primitive campsite or simple, flat area where camping is possible.  Often used to refer to a very primitive campsite comprised of natural materials found on site such as leaves and branches.  Often used interchangeably with the word camp, however, bivouac implies a shorter, quicker and much more basic camp setup.  For example, at the Taylor Meadows campground in Garibaldi Park, camping is the appropriately used term to describe sleeping there at night.  If instead you plan to sleep on the summit of Black Tusk, bivouacking would be more accurately used.  In the warm summer months around Whistler you will find people bivouacking under the stars with just a sleeping bag.  The wonderful, wooden tent platforms at Wedgemount Lake are ideal for this.

Bivouac Island - Callaghan Lake

Bushwhack: a term popularly used in Canada and the United States to refer to hiking off-trail where no trail exists.  Literally means 'bush' and 'whack'.  To make your own trail through the forest by whacking or cutting your way through.  Often used to plot a new trail and trail markers are used to mark various routes until a preferred route is found.  In Whistler and Garibaldi Provincial Park, bushwhacking may also refer to an early season trail that is littered with fallen trees from winter storms.  Existing trails can also become overgrown and require bushwhacking to navigate through.  The Brew Lake trail in Whistler requires some bushwhacking for some of the overgrown trail.  A bushwhacker is a term used to describe someone who spends a lot of time in the wilderness.

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