The Gruta do Carvão is an ancient lava tube located on the outskirts of the municipality of Ponta Delgada on the island of São Miguel in the Portuguese archipelago of the Azores.
Wikipedia https://en.wikipedia.org/wiki/Gruta_do_Carvão
Official Website http://amigosdosacores.pt/grutadocarvao
Phone +351 961 397 080
Address (Unnamed Road), 9500230, Portugal
Coordinates 37°44'53.39" N -25°41'13.448" E
