Before you is a book completely dedicated to the Serga River - one of the most beautiful in the Urals. Now there is a popular natural park "Deer Streams." The author studied all the available literature about Serg, made a series of expeditions along the river and its environs. Even people who have been to these places many times after reading a book will learn a lot. The publication contains a detailed lot, indispensable on alloys. The book will be of interest to tourists, local historians and everyone interested in their native land.