I reckon Roosevelt elk should be a backfilled species in Yukon valley I like to hunt these animals and I also love Yukon and after doing some research I could see them being a great fit
#Roosevelt elk in yukon
nova vessel
outer night
Yukon Valley is in the Alaskan Interior which has no Elk of any kind (Map Source: https://www.adfg.alaska.gov/index.cfm?adfg=elk.main)
urban mortar
Yeah MooseDragon is right. It's just way too much of a stretch to add them to Yukon Valley.