Blue Lake Cave

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Blue Lake Cave

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Blue Lake Cave, Natural cave system with underground lake in Bonito, Brazil

The cave extends over 2000 meters underground, featuring a central chamber with a 90-meter-deep lake surrounded by white limestone formations.

Scientists discovered Pleistocene mammal fossils near the cave, including remains of giant sloths and saber-toothed tigers from 12,000 years ago.

The Brazilian government designated this cave system as a Natural Monument in 1978 through the National Institute of Historic and Artistic Heritage.

Visitors must join guided tours with certified guides from Bonito municipality, following specific protocols to maintain the cave's natural state.

Between September and February, sunlight entering through the 40-meter-wide entrance creates an intense blue reflection in the underground lake.

Location: Mato Grosso do Sul

Inception: 2001

Website: http://imasul.ms.gov.br/conservacao-ambiental/gestao-de-unidades-de-conservacao/unidades-de-conservacao-estaduais/monumento-natural-gruta-do-lago-azul

GPS coordinates: -21.14470,-56.59150

Latest update: March 4, 2025 12:11

Natural spots and local places in Brazil

Brazil features natural areas and local sites beyond major cities. The landscape spans from waterfalls and caves to coastal regions and mountains. National parks contain sand formations, lagoons, and coral reefs. Cultural places include traditional villages and historical sites.

Natural locations in central west Brazil

The Central West region of Brazil contains natural sites and remote locations. The region features waterfalls, caves, underground rivers and mountain ranges. The area includes colonial towns, archaeological sites and national parks with wildlife.

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