Tolar Grande is a village and rural municipality in Salta Province in northwestern Argentina.
Tolar Grande had its period of maximum expansion towards the 1940s. At that time, the town constituted the end of the railroad branch to Chile, projected to unite the city of Salta with the city of Antofagasta. It is estimated that at that time, around 5000 people lived in the town, mainly dedicated to railway activity.
At the same time, during this period the La Casualidad Mine was in full activity, transporting the sulfur cargoes from Mina Julia to the Tolar Grande railway station, to be shipped from there to their final destination.
The closure of the mine, the interruption of the railway project, and then the total closure of the branch led to the depopulation of the region, with the consequent deterioration of the living conditions of the few residents who decided not to leave the town.