one of my favorite songs is Bristle Cone PIne
where the song says:
when it somes my time it would suit me just fine
to sleep at the feet of the Bristle Cone PIne....
and as i would slowly return to this earth
what little this body of mine might be worth
would soon start to nourish that tree
and it would partake of the essence of me...

Bristle cones are thought to be the oldest living things on earth.
They live above the line where most trees can survive 10-12,000
feet elevation on the wind swept ridges of the Great Basin.