Gruta Casa de Pedra, Cave entrance in Iporanga, Brazil
Gruta Casa de Pedra is a cave in the Alto Ribeira Tourist State Park with a monumental limestone entrance portal. The cave system extends through multiple galleries containing an underground river with natural waterfalls.
The cave received scientific recognition during the first Brazilian Speleological Congress in 1964 when its entrance was formally measured. This early documentation established it as a notable geological site in the region.
The cave holds importance for the region's identity as a natural wonder that draws people seeking to connect with the area's geology. Visitors experience how the landscape shapes local pride in preserving these formations.
To reach the cave, visitors travel from Iporanga along a rural road and cross several wooden bridges along the way. The route requires moderate walking ability and basic climbing skills to access the main entrance area.
The cave system extends for over 5 kilometers through interconnected galleries, making it one of the longest in the region. The underground waterfalls are created by the steady flow of the subterranean river cutting through the limestone.
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