The other northward-flowing rivers (passing through innumerable lakes and lakelets) enter Hudson's Bay.
West of the great Mackenzie River rises the northernmost extension of the Rocky Mountains.

All this easternmost part of Alaska, which is under British control, is a region of great elevation, something like parts of Central Asia.

The streams which rise here unite in the great Yukon River, and this has its outlet in Bering's Sea.

Some points of the great mountains within the limits of British territory in this direction reach to nearly 20,000 feet (Mount Logan).
But the climate of the northern parts of the Canadian Dominion differs very greatly in the west as compared to the east.

For instance, the northern parts of Labrador are cruelly Arctic, hopelessly frozen, though they are in the same latitude as St.Petersburg (the capital of European Russia) and as the splendidly forested northern parts of British Columbia.