Gruta do Lago Azul Natural Monument

Gruta do Lago Azul Natural Monument
Nearest cityBonito, Mato Grosso do Sul, Brazil
Coordinates21°08′41″S 56°35′29″W / 21.1447°S 56.5915°W / -21.1447; -56.5915
DesignationNatural monument
Created1978

Gruta do Lago Azul Natural Monument (Blue Lake Cave) is a natural monument in Bonito, Mato Grosso do Sul, Brazil. It holds two caves with interesting but fragile calcareous formations, and has been listed as a protected area since 1978.