How Does the Geography of the Wood of Suicides contribute to the Meaning of the Text?

The 'total meaning' of the text in this wood of suicides is to show the consequences and dangers of selfishness. The meaning hints at the negation of things (specifically the negation of self). The 'total meaning' strives to represent the cost of things unnatural. Here in Canto XV, the poetry deals with the sin of Suicide.  Suicide is the sin, which is the very embodiment of negation (For you are literally negating the very thing which allows you to have the power of negation) but the root of this sin is selfishness. Also the act of this sin is to defy nature. The landscape of this canto is a barbaric wood with bare trees and thorny thickets. "The leaves not green, earth -hued;/ The boughs not smooth, knotted and crooked-forked;" This landscape is the very inverse of nature. Natural forests are lush and have green leaves. Also as Pinksy's notes so clearly explain the very poetry depicts the idea opf negation "the leaves not green... the boughs not smooth, knotted." The theme of selfishness is explored through the theme of contropasso. On earth above, the suicides were obsessed with self-pity and self-absorption, so as a consequence these suicides are forced to not have a recognizable being. Nobody else can see the 'self' or the identity of these suicides unless they harm these living bushes. This is the inversion of their act of sin. For in the suicide's act of sin, they attempted to exalt themselves and give identity to themselves
by harming themselves.