San Andres, Providencia, Santa Catalina (Colombia) | San Andres y Providencia Three inhabited islands of San Andres, Providencia and Santa Catalina form the San Andres Archipelago, one of the most isolated regions in the Caribbean. Around them lie five uninhabited atolls to the north and two to the south. Surounded by extensive coral barrier, islands of San Andres and Providencia is paradise for divers and snorkellers. Sanandres.me.uk~Site InfoWhoisTrace RouteRBL Check