Aerial view of cactus island Isla Incahuasi in the middle of Salar de Uyuni salt flat, Bolivia

aerial salt flat salar bolivia cactus isla island adventure salt lake altitude america bizarre dry exotic formation desert plants geological formations gigantic cacti travel destination incahuasi journey landscape nature soil outdoors earth fossil fuel salar de uyuni south america surreal uyuni white wilderness arid climate plants barren cacti conservation earth science exploration extreme environment geological processes high altitude isla incahuasi rugged terrain succulents unique flora nature wonder nature beauty valley