Two friends are midway on a canoe trip down the Danube River. Throughout the story Blackwood personifies the surrounding environment—river, sun, wind—and imbues them with a powerful and ultimately threatening character. Most ominous are the masses of dense, desultory, menacing willows, which "moved of their own will as though alive, and they touched, by some incalculable method, my own keen sense of the horrible. "
Not quite Poe
...but an enjoyable vingnette--well told and with a first rate build and sense of atmosphere.