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Accumulation Zone - Clayoquot Hiking Terms

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Accumulation Zone - Clayoquot Hiking Terms


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.

Accumulation Zone - Clayoquot Hiking Terms

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.

Accumulation Zone - Clayoquot Hiking Terms

Click the image above to see an aerial view of Overlord Glacier and the accumulation zone is visible to the left of the Fissile.  Click the image below to see an aerial video of the Wedge Glacier.

Aerial View of Wedgemount Lake

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.  Strategically positioned, these platforms manage to maintain an amazingly secluded feel despite their numbers.  In all Wedgemount Lake has 20 of these tent areas.  Most are wooden, but several down by the lake shore are gravel, yet every bit as nice.

Glacier Aerial View

At a fast hiking pace you can reach Wedgemount Lake from the trailhead in just an hour and a half but at a leisurely or backpack laden pace you will likely take over two hours.  The trail is well marked and well used.  The steepness of the trail doesn't require any technical skill, however that last kilometre before the lake you will be scrambling on all fours quite a bit.

Glossary of Hiking Terms


Cornice - Clayoquot Hiking TermsCol: a ridge between two higher peaks, a mountain pass or saddle.  More specifically is the lowest point on a mountain ridge between two peaks.  Sometimes called a saddle or notch.  The Wedge-Weart Col is a popular destination at the summit of the Wedge Glacier in Garibaldi Park.

Cornice: a wind deposited wave of snow on a ridge, often overhanging a steep slope or cliff.  They are the result of snow building up on the crest of a mountain.  Cornices are extremely dangerous to travel on or below.  A common refrain of climbers is that if you can see the drop-off of a cornice, you are too close to the edge.  Cornices are dangerous for several reasons.  They can collapse from hiking across or they can collapse from above.  A third danger to consider is the fact that they can often trigger a massive avalanche that extends a considerable distance from its starting point.

Cornice - Clayoquot Hiking Terms

Couloir: a narrow gully often hemmed in by sheer cliff walls. From the French word meaning passage or corridor.  Often a couloir  is a fissure or vertical crevasse in a mountain.  Couloirs are often partially filled with scree and when covered in snow form a dramatically beautiful, near vertical channel in mountains.  Couloirs are well loved by extreme skiers and snowboarders and feature in most extreme skiing/snowboarding movies.

Erratic - Clayoquot Hiking Terms

Erratic or Glacier Erratic: is a piece of rock that has been carried by glacial ice, often hundreds of kilometres. Characteristic of their massive size and improbable looking placement.  Erratics are frequently seen around Whistler and Garibaldi Provincial Park.  Either as bizarre curiosities or a place to relax in the sun.  On a sunny day, a large sun-facing erratic will often be warm and sometimes even hot, providing a comfortable and surreal place to rest.

Firn: compacted, granular snow that has been accumulated from past seasons.  Firn is the building blocks of the ice that makes the glacier.  Firn is the intermediate stage between snow and glacial ice. Firn Line: separates the accumulation and ablation zones.  As Firn - Clayoquot Hiking Termsyou approach this area, you may see strips of snow in the ice.  Be cautious, as these could be snow bridges remaining over crevasses.  Snow bridges will be weakest lower on the glacier as you enter the accumulation zone.  The firn line changes annually.

Gendarme: a pinnacle sticking up out of a ridge. A steep sided rock formation along a ridge, “guarding” the summit.  From the French ”man-at-arms”.

Glacier Window: the cave-like opening at the mouth of a glacier where meltwater runs out.  Glacier windows are often extraordinarily beautiful.  A blue glow often colours the inside and the walls are filled with centuries old glacial till.  You can often see deep into the clear walls and the enormous magnitude of a glacier can be appreciated from up close.  The popular and easily Gendarme - Clayoquot Hiking Termsaccessible glacier window at the terminus of the Wedge Glacier at Wedgemount Lake is a stunning example of this.

Glissade: descending down a snow slope on foot, partly sliding.  A quick alternative to simply hiking down a snow slope.

Hanging Glacier: separating portions of glaciers, hanging on ridgelines or cliffs.  Extremely dangerous, hanging glaciers are frequently the cause of death of mountaineers.

Headwall: a steep section of rock or cliff. In a glacial cirque it is it's highest cliff.

Highpointing: the sport of hiking to as many high points(mountain peaks) as possible in a given area.  For example, highpointing the Highpointing - Clayoquot Hiking Termslower 48 states in the United states.  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.

Panorama Ridge 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. Hoary Marmot - Clayoquot Hiking TermsThey live off of grasses, berries, lichens, mosses, and roots and flowers. And 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.

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