Mountains
M: The snow on the twin peaks is starting to melt.
O: There is a hill so perfectly round, God must exist.
U: Once you go into that valley, there's no coming out.
N: A mountain and a half still stand, despite everything.
T: The tallest tree in the world, struck by lightning.
A: You will soon reach a point where nothing is green.
I: The clouds have crowned this tree.
N: Night falls. Only half the mountain range is visible.
S: Roots delve deep into the earth, unseen.