The poem reads like a series of notes jotted down on a walk through woods in autumn. It begins at an old corral, a human structure left behind, and sets two numbers side by side: two years for horses, 47 for trees. The comparison suggests that the animals passed through quickly while the forest has been steadily taking the place back, though the poem never says so outright.
The rest is made of small observations: leaves that look "too red" because half the maple's foliage is actually poison ivy, ferns that seem unchanged across 180 million autumns, and fungi that turn fraying fronds into illuminated manuscripts. The speaker doesn't announce a feeling. Instead, the attention itself shows it: quiet wonder, a touch of wry humor, and a sense of humility before time on a scale far beyond human life. The mood is calm and observant. The short, spare lines make you slow down and look, much as the speaker does, and the final image, a black birch log, leaves you with something simple and decaying to rest on.