A walker moves through a forest, noting small details as they appear, and the poem is built from those fragments. A distant train horn, a murky pool dotted with bubbles, mosquitoes drifting up around the knees. Each image sits alone, with space around it, much like the pauses of a slow walk.
Beneath the quiet observation there is a sense of loss. The mention of West Nile virus turns the mosquitoes from a minor nuisance into something faintly threatening. The speaker misses the sudden burst of a grouse flushing from cover, which the poem suggests is no longer so common here. The old charcoal hearth points to past human work, and the last butternut tree is already a mossy corpse.
The speaker never states a feeling outright. The mood is quiet and elegiac, a calm kind of grief, as if the speaker is noticing, one detail at a time, how much of this place has faded.