He went deep, but also didn't

Mount Doom is also called Orodruin and Amon Amarth

Even in Sindarin, Treebeard’s name (Fangorn) still literally translates to tree + beard

yeah the funny part of losing back at Tolkien is that things that seem like tropes are actually original, they only became tropes after he invented half the stuff that we take for granted in modern fantasy.

it's not even a beard... it's moss.