Told as a series of questions, the poem puts the reader in the position of someone being quietly accused. The speaker leads us to an abandoned cabin with shuttered windows and a rusted door, then to a river where whispers move through the reeds. Both places hold things people would rather forget. The forest, personified as "she," claims to have seen and heard everything, and the speaker passes her questions along: what did you leave behind, and what did you confess that night?
The mood is eerie and hushed, with a slow sense of dread. The image of scarlet pooling from "the slain" and washing away suggests a violent act, though the poem never says what happened. That vagueness is what makes it unsettling. The speaker seems less angry than watchful, almost like a witness or a conscience, gently pressing on a guilt the "you" can't escape. Nature here doesn't forget, however deep the secret sinks.