Natural wondersGeological and meteorological wondersPortugalMadeiraTypes of wondersWonders of EuropeRock formationsWonders by countries Pedreira do Piano, Porto Santo July 26, 2019 0 134 views Share on Facebook Tweet on Twitter Pedreira do Piano, Porto Santo. / Nmnogueira, Wikimedia Commons / CC BY-SA 3.0 Former quarry of basalt with impressive formations of hexagonal basalt. Location, GPS coordinates: 33.0492 N 16.3679 W Categories: Rock formations Values: Geology, Visual Rating: (2 / 5) Where is located? Europe, Portugal, Madeira, Porto Santo Island, north from Pico da Ana Ferreira Pedreira do Piano, Porto Santo on the map Travelers' Map is loading... If you see this after your page is loaded completely, leafletJS files are missing.