water in thermal spring pool with waterfall falling in the caldeira velha, são miguel - azores portugal

water thermal spring pool waterfall falling from rock natural monument caldeira velha sapound miguel azores portugal wild leisure foliage rainforest hot bath attraction volcanic geothermal tropical travel touristic tourism destination iconic famous season outdoor scenic environment park nature landscape geology geologic cyatheaceae tree ferns fern climate laurisilva forest flora biosphere reserve cascading europe portuguese aasect ores island sao ribeira grande