Published in 1907, Algernon Blackwood's "The Willows" is considered one of the finest examples of supernatural fiction in the English language. Two canoeists on the Danube River during flood season camp on a desolate island surrounded by vast swamps of willows, only to discover that they have trespassed into a realm inhabited by ancient, alien forces. The story masterfully builds an atmosphere of mounting dread as ordinary natural phenomena become increasingly sinister and inexplicable.