in the campaign “Strengthening of the Border Line and Reconnaissance of Resources (1711–1717)”
The government of the Tsardom of Muscovy organized expeditions to study and inventory natural resources in the territories of the Indigenous population: historian Ya. Z. Akhmadov records the 1717 "survey of mineral springs and other natural riches of the Terek River (including the Bragun warm springs) by Doctor Gottlieb Schober on the assignment of Peter I"[1].