Gruta Do Lago Azul

Located near Bonito, Brazil, the Gruta Do Lago Azul or Blue Lake Cave is a cave with an underground lake that is thought to be over 200 ft deep. The lake has incredibly clear blue water that looks even more spectacular when the light hits it just right. The best time to see the cave is from mid-November to mid-January around 8:30 in the morning when the sun shines through the entrance and reflects off the water creating a light blue glow.

Bonito is just north of Bonito Airport though to get to Brazil you will have to fly into one of the major airports and take domestic flights from there.