A man in a cave

This morning I met a man at breakfast who lives in a cave. It was quite cool. Its Switzerland, mountains everywhere - makes sense that there would be a cave and that a man would choose to live in it. He spends his summers in the cave and winters in Zurich. Buys his food in town, but gets his water from a spring and baths in a little area a bit away. Says that life is good that way. He was a quiet sort.