That was actually confirmed? With tracks or hair? Cuz anecdotal sightings....well, let's just say I know a guy who'll swear he saw Bigfoot down in there and a moose can look a lot like bigfoot or a brown bear when seen at the bottom of a deep canyon from 3000 ft away
Were they in the main canyon or up in Badger? Doesn't seem like there would be much of anything for them to eat in the main canyon. Not too much in Badger either. There's some thimbleberry in Badger but not a lot. Those must be real stupid bears because in August any grizz with half a brain is up in the high country flipping rocks for cuttworm moths. That's their biggest source of fat for the entire year...seems sort of unlikely that they could afford to skip out on that for some cool water and shade. Cool water doesn't do much to help a bear survive hibernation. Unless... I wonder if some of the talus in the canyons holds moths? Great, another thing to worry about.
I'm sort of skeptical. I've never seen disturbed talus down there and I know what it looks like. Never seen bear tracks or shit down there. Not in 250 trips. I have, however, seen lion tracks bigger than my hand. Saw a lone wolf stalking calving mulies over by Spring Hollow two years ago.