What do you call a fish wearing a bow tie?

I’ve been pelted with rocks for billions of years, yet people still write poems about me.

I’m where you sleep under stars, cook on fire, and wake up to birds. No hotel, no wifi, just nature. What am I?

A natural hole in the wall, or a void buried and warded A site of memory for time before history recorded

This four letter word can be an animal, but you might also use a wax version of me to close a letter. I can sometimes be airtight, or you might even talk about a lab being hermetically ____ed