The British Mountains are a mountain range in

Yukon Yukon (; ; formerly called Yukon Territory and also referred to as the Yukon) is the smallest and westernmost of Canada's three territories. It also is the second-least populated province or territory in Canada, with a population of 43,964 as ...

Territory, Canada. They constitute some of the largest unglaciated mountain areas in Canada.https://yukon.ca/sites/yukon.ca/files/emr/emr-british-richardson-mountains.pdf

References

Mountains of Yukon {{Yukon-geo-stub