What is the setting of the poem "The Heart of the Tree" by Henry Cuyler Bunner?

This is an interesting question, because the poem has no obvious setting. It is not a narrative
with an external location; rather, it is a hypothetical train of thought. Therefore, the literal
setting of the poem would be the mind or brain of the speaker, though that is
likely...

href="https://poets.org/poem/heart-tree">https://poets.org/poem/heart-tree