The plutonic and metamorphic rocks extend approximately 1,800 kilometers on the coast of British Columbia, southwestern Yukon and southeastern Alaska.

The extensive icefields around Mount Silverthrone are receding and are small compared to their former extent, but they are an impressive indication of how much of British Columbia looked 10,000 years or more ago.

The first mountaineering visit at Mount Silverthrone was in 1936 by the famous pioneering climbing couple Don and Phyllis Munday, accompanied by Henry Hall, by walking up the Klinaklini Glacier from the head of Knight Inlet.

[6] The easiest access to Mount Silverthrone is by air travel, starting from the rural community of Tatla Lake, landing on the major part of the Ha-Iltzuk Icefield.

Air travels can also be made into logging camps at Owikeno Lake to the west or at the start of Knight Inlet to the southwest, followed by long hiking and skiing methods.