(No Misgivings) Dendrochronology

I stood up from the ground here.
Set myself in stone.
You take it all for granted,
living under shadows of leaves.

I'm turning, I'm changing signs.
No misgivings.

If you cut me in half now,
if you cut me down to size,
I'll interrupt the silence
though I haven't spoken in years.

Rings around you -
know there's no beginning or end.