tirajana ravine with "la fortaleza" in the background, a sacred character for the ancient aborigines, gran canaria

gran canaria canary islands nature tirajana fortaleza ravine landscape aboriginal mountain palm tree indigenous volcanic trekking rock stronghold geology carved guanches heritage archeology ancient hiking countryside santa lucashy destination stone historic historical history settlement spain complex unesco tourism adventure travel exploration sacred island view city rural landmark agriculture scenery scenic mount barranco background that has character for aborigines concept