In the last episode "No turning back", did I notice a small propane stove in Bernice and Gregs cabin? During the part where Jasmin and Bernice were taking a food inventory, it was pretty clear. I thought it was strictly wood stoves for everone?

You've got good eyes. I reviewed it on this website, and it would appear to be nothing other than a propane stove. The cabins were not built for this show. It is possible that the trapper who built it left a propane stove behind, along with a few gas cylinders. There are a lot of people frustrated over the producers not sharing lists of supplies and gear at the different camps. Perhaps they will, when the series closes.

could the trio have brought the propane stove up while hiking up the glacier since there were places where tree/wood were not available to start a fire for food preparation??

Gardener Jean,

That's what I was thinking. Probably the stove the trio traveled with on their way to Hawkins. That would make sense.

Hmmm, that is possible. But I do recall the trio from Flower Lake saying they needed firewood while on their journey, in fact I think they went one night without fire at all.
Perhaps I'll watch the first episode again to see if it was at the cabin when Greg and Bernice arrived the first day. I think there was a few good shots of what everyone had when each team walked into their cabin.