Floating Down a Canal, by F. Scott Fitzgerald
"They floated off, immediately entering upon a long echoing darkness. Somewhere far ahead a group in another boat were singing, their voices now remote and romantic, now nearer yet more mysterious, as the canal doubled back and the boats passed close to each other with an invisible veil between. The continual bump-bump of the boat against the wooden sides. They slid into a red glow - a stage set of hell, with grinning demons and lurid paper fires - then again into the darkness, with the gently lapping water and the passing of the singing boat now near, now far away."
-F. Scott Fitzgerald