He took off a thermal layer at the warmth of the day, I don't see anything all that odd about it. The wallet wasn't needed, so he would have put it with the layer. I hope the site was marked, so that interested parties might try to locate a camp site.
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-IronRaven

When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.