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.
During the last ice age, glaciers covered British Columbia, and where Whistler is today, the glaciers were two kilometres thick. Glaciers from the last ice age can often be measured by the grinding marks made on the mountains they covered. In the mountains around Whistler you can see just a few that poked through the glaciers, leaving their peaks jagged. Other, shorter mountains around Whistler can be easily recognized as completely covered in ice. Shown by their rounded, glacier ground peaks. The most impressive erratics lay in an area with dissimilar rock types in the surrounding mountains. For example, rock and mountains around the erratic should be of different colour, texture and composition. An erratic should look very out of place and distinct from its surroundings. Erratics are frequently the result of glaciers carrying or grinding the erratic as it slowly moves down a glacier valley. Rock slides from mountains can deposit house sized boulders onto a glacier which then slides down a valley for centuries, eventually releasing it. These erratics are easy to trace back to their parent rock by matching them to identical rocks up the likely ice flow route. Ice rafting is another way erratics have been moved great distances. Ice rafting results from an ice dam breaking apart and tremendous volumes of water and ice flooding through. These erratics are often detected by the high water marks left by the floods that moved them. Another cause of erratics is via icebergs floating in the ocean and eventually releasing the rock encased in the melting ice.
Brandywine Meadows Lounge Chair Erratic
Monstrous Erratic Along the Brandywine Meadows Trail
Enormous Broken Erratic Along the Flank Trail
Erratic at Beautiful Wedgemount Lake
Erratic at Russet Lake
Erratic Split by a Tree on the Helm Creek Trail
More Whistler & Garibaldi Park Hiking A to Z!
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 ...
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 ...
The Roundhouse Lodge is the centre of activity on much of Whistler Mountain. It is where the Whistler Gondola drops off and next to where the Peak 2 Peak ...
Mills Winram was a very active mountaineer from Vancouver with some very notable ascents in the 1920's and 1930's. He, along with Fred Parkes and Stan ...
The Garibaldi Volcanic Belt is a line of mostly dormant stratovolcanoes and subglacial volcanoes largely centred around Whistler and extending through much ...
The Green Lake Loop is the original trail that runs around the back side of Green Lake. Before the Sea to Sky Highway was cut through the valley in 1964, ...
The Cordilleran Ice Sheet covered most of north-west North America for much of the last 2.6 million years. At the Last Glacial Maximum during the Last ...
The Sea to Sky Trail is a 180 kilometre multi-use trail that runs from Squamish to D'Arcy. The trail is still under construction in many parts, however, the amazing route through Whistler is finally in ...
The alpine hiking trails on Whistler Mountain are the ultimate in luxurious, quick-access alpine hiking. Little effort gets you amazing views of turquoise lakes, snowy mountains, valleys of flowers and ...
Whistler has an absurd number of wonderful and free hiking trails and Parkhurst Ghost Town certainly ranks as the most unusual and interesting. Parkhurst was a little logging town perched on the edge of Green ...
Nairn Falls is a wonderful, crashing and chaotic waterfall that surrounds you from the deluxe viewing platform that allows you to safely watch it from above. The beautiful, green water rushes through the ...
September hiking in Whistler is possibly the best month of all. The snow has melted far up to the mountain tops, yet the temperatures are still quite high. ...
Hiking in Whistler in October is often unexpectedly stunning. The days are much shorter and colder but the mountains are alive with colour from the fall ...
November in Whistler is when the temperatures plummet and the first heavy snow falls in the alpine and often in Whistler Village. The hiking opportunities become ...
December hiking in Whistler is mainly done on snowshoes, though not always. If it hasn't snowed much recently then trails such as Whistler Train Wreck and ...
Hiking in Whistler is spectacular and wonderfully varied. Looking at a map of Whistler you see an extraordinary spider web of hiking trails that are unbelievably numerous. Easy trails, moderate trails and challenging hiking trails are all available. Another marvellous ...
Squamish is located in the midst of a staggering array of amazing hiking trails. Garibaldi Provincial Park sprawls alongside Squamish and up and beyond Whistler. Tantalus Provincial Park lays across the valley to the west and the wonderfully remote Callaghan Valley ...
Clayoquot Sound has a staggering array of hiking trails within it. Between Tofino and Ucluelet, Pacific Rim Park has several wilderness and beach trails, each one radically different from the last. The islands in the area are often Provincial parks on their own with ...
Victoria has a seemingly endless number of amazing hiking trails. Most take you to wild and beautiful Pacific Ocean views and others take you to tranquil lakes in beautiful BC Coastal Rainforest wilderness. Regional Parks and Provincial Parks are everywhere you turn in ...
The West Coast Trail was created after decades of brutal and costly shipwrecks occurred along the West Coast of Vancouver Island. One shipwreck in particular was so horrific, tragic and unbelievable that it forced the creation of a trail along the coast, which ...
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. 
Alexander Falls 
Ancient Cedars 
Black Tusk 
Blackcomb Mountain 
Cheakamus River 
Cirque Lake 
Sproatt East 
Wedgemount Lake 
January 
March 
June 
September 
