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Owner description: Caldeira Velha is a protected area classified as a Natural Monument of Sao Miguel Natural Park and a geosite of Azores UNESCO Global Geopark.
This natural area is a place of secondary volcanism of the Fogo Volcano. It is possible to observe a fumarola and a hot spring that through a stream feeds two natural pools: one with a waterfall, whose water is about 26ºC and the small pool with water at 38ºC.
As a protected area and a geosite, exists an Environmental Interpretation Centre with information about the volcanic origin of the islands, the geodiversity and biodiversity of the Azores, with emphasis on Caldeira Velha, and geothermal powerplant. You may ask for your tour at the Environmental Interpretation Centre of Caldeira Velha and enjoy a relaxing bath in the natural pools.