Arete Sea to Sky Hiking Terms
Arête: a thin ridge of rock formed by two glaciers parallel to each other. Sometimes formed from two cirques meeting. From the French for edge or ridge. Around Whistler and in Garibaldi Provincial Park you will see dozens of excellent examples. Below Russet Lake in Whistler, the glacier at the bottom of the valley, below the lake has a wonderful example of an arête. The far side of Mount Price, near Garibaldi Lake also has an enormous arête. The Wedge-Weart Col beyond Wedgemount Lake is a prominent arête to the summit of Wedge Mountain. The video below is an aerial view of the mountains around Wedgemount Lake in Garibaldi Provincial Park. Rethel is the one on the right and Parkhurst on the left. The video continues with Wedge Mountain, Wedge Glacier, Mount Weart and Mount Cook.
The video below shows Rethel up close then a panorama of the valley to include Parkhurst, Wedge, Weart and Cook.
Click the video here to see the prominent arête leading to the summit of Wedge Mountain(top middle - pictured below).
Wedgemount Lake is one of the most spectacular hikes in Garibaldi Park. Though it is a relentlessly exhausting, steep hike, it is mercifully short at only 7 kilometres (one way). The elevation gain in that short distance is over 1200 metres which makes it a much steeper hike than most other Whistler hiking trails. Compared with other Whistler hikes, Wedgemount Lake is half the roundtrip distance of either Black Tusk or Panorama Ridge, for example, at 13.5k and 15k respectively (one way). 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.
Glossary of Hiking Terms Squamish 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.
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. Separated 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 closely 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.
Bench: 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.
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, horizontal, 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 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.
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.
Buttress: a prominent protrusion of rock on a mountain, often column-shaped, that juts out from a rock or mountain. They are often so distinct as to be named separately from the mountain they protrude from. Buttresses often make a viable bivouacking option on an otherwise steep mountain. Numerous in the mountains surrounding Whistler, the term buttress is frequently heard while hiking, scrambling, ski touring and climbing.
Cairn: a pile of rocks used to indicate a route or a summit. The word cairn originates from the Scottish Gaelic word carn. A cairn can be either large and elaborate or as simple as a small pile of rocks. To be effective a cairn marking a trail has to just be noticeable and obviously man-made. In the alpine areas around Whistler, above the treeline, cairns are the main method of marking a route.