"El Arroyo" is a book by the outstanding French anarchist and geographer Elyse Reclus. In his publication, he explores important aspects of the relationship between nature and society in geography. The author carefully analyzes the interaction of man with nature, the influence of these processes on the formation of culture and the interaction between different social groups. His views on the problems of ecology and socio-economic relations remain relevant today, making the book "El Arroyo" an important source for understanding human interaction with the environment.