The Second Jungle Book by Rudyard Kipling Chapter 13 Page 26

A mile or two above the Peace Rock the Waingunga narrows between a gorge of marble rocks from eighty to a hundred feet high, and the current runs like a mill-race between and over all manner of ugly stones. But Mowgli did not trouble his head about the water; little water in the world could have given him a moment’s fear. He was looking at the gorge on either side and sniffing uneasily, for there was a sweetish-sourish smell in the air, very like the smell of a big ant-hill on a hot day. Instinctively he lowered himself in the water, only raising his head to breathe from time to time, and Kaa came to anchor with a double twist of his tail round a sunken rock, holding Mowgli in the hollow of a coil, while the water raced on.

“This is the Place of Death,” said the boy. “Why do we come here?”