The pool is formed by a natural geological formation in the bed of the Rio do Ouro.
It sits within the boundaries of the Serra do Mar State Park, one of the largest protected Atlantic Forest areas in Brazil.
The water temperature remains consistently cool year-round due to the forest canopy coverage.
The surrounding geology is primarily composed of gneiss and metamorphic rock typical of the coastal mountain range.
Lagoa Azul in Caraguatatuba is a natural freshwater pool formed by the Rio do Ouro, situated within the Atlantic Forest biome. The site features a series of cascading rocky pools and small waterfalls accessible via a short hiking trail. The water is characteristically cool and transparent, surrounded by dense tropical vegetation. It is a popular spot for freshwater swimming and natural hydrotherapy among locals. The area serves as an access point to further hiking trails within the Serra do Mar State Park region. Visitors should expect rocky, uneven terrain surrounding the primary bathing areas. The location is maintained as a natural heritage site, focusing on conservation and minimal infrastructure.
The elevated rock ledge overlooking the largest main pool area.
Wear water shoes with strong grip to navigate the slippery, moss-covered rocks safely.
Bring insect repellent, as the humid forest environment attracts mosquitoes.
Pack out all trash, as there are no waste disposal services at the natural site.
Visiting immediately after heavy rainfall, as the water level can rise rapidly and become turbid.
Practice leave-no-trace principles; do not use soaps or shampoos in the water; keep noise levels low to respect wildlife.
