It faces East so that the sun comes in the cave in the morning. You can always see a glacier from a cave. There's usually a rocky moraine around the caves and there's always a valley below. You can see it from the cave. There are trees along the valley.
Fish come up the rivers.
There were Atlantic salmon in these rivers. Migratory herds of ungulates, all kinds, some of which are extinct now. They came during the summer to eat grass on the side of the valley. Migratory birds came through. The birds lived in the trees when they were there.