The trail forms a unified space of people, nature, history and culture. The project seeks to put into practice the principles of sustainable development. The trail forms a common space of people, nature, history and culture. The project seeks to put into practice the principles of sustainable development.The Volga Trail is a pearl thread on which 26 specially protected natural areas, more than 100 cultural and historical sites, customs and ways of life of 6 ethnic groups are strung.