I’ve driven the Yukon twice, yup, it’s rather barren in many places but not all. But yep, it’s likely that it’s buried in ice or at the bottom of a swamp/lake.
For anyone interested in a very nice long drive... The Alaskan Highway is NOT it. Boring endless nothing....
I don’t remember the drive because I was only six weeks old. The only thing I know for sure is that the Al-Can Highway was entirely gravel.
The most scenic drive I have been on is between Banff and Jssper, Alberta - the Valley of 10,000 Peaks.