Based on the set-up, I would think that the characters do t really have a chance to act until the gondola has fallen into the forest, so maybe a map of the "crash" site would be best. There is a lot you could do with that. Is the forest so dense that little clearings are far and few between? How badly is the gondola damaged? Does it provide any protection from aggressive/hostile beasties? What kind of equipment might be available or made from the wreckage of the gondola?

Just some food for thought and, perhaps, a bit of inspiration. And dig that set-up.