Also, it doesn't sound like SK had binoculars with him. Those poles would just blend into the landscape.
I was wondering how big the backpack of meat was, but not that big if he left a trekking pole to mark it.
A trekking pole isn't that big in height either, so it was unlikely he was actually going to see it....but he thought he'd be able to! So that to me indicates scrambled thinking and not judging the territory and distances correctly.
Sure, use a pole to mark something in a garden or small park......not out in the wilderness if the Arctic tundra.