description Caldeira Velha Overview
Caldeira Velha is a protected geothermal and botanical site on São Miguel, the largest island in Portugal's Azores archipelago. Located on the slopes of the volcanic complex of Fogo, it contains warm iron rich pools, steaming ground, and a thermal waterfall surrounded by dense subtropical vegetation. The site is used both for bathing and for observing volcanic activity at the surface, with visitor access managed to protect the sensitive landscape.
help Caldeira Velha FAQ
Where is Caldeira Velha located?
Caldeira Velha is a protected geothermal site located on São Miguel, the largest island in Portugal's Azores archipelago. It sits on the slopes of the Fogo volcanic complex.
What can visitors see at Caldeira Velha?
The site features warm iron-rich pools, steaming ground, and a striking thermal waterfall. These geothermal features are surrounded by dense subtropical vegetation.
Is Caldeira Velha a natural botanical garden?
Yes, it is officially recognized as both a geothermal and botanical site. The warm, humid environment allows lush ferns and exotic plants to thrive around the hot springs.
What causes the geothermal activity at Caldeira Velha?
The hot springs, mudpots, and steaming ground are caused by volcanic activity associated with the Fogo complex. São Miguel island itself was entirely formed by volcanic forces.
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