south america nature landscape, dead trees on bottom of dark canyon after post-eruptive lahar on mountainside through araucaria ar

america andes araucana araucania araucaria ash bottom canyon chile chilean dark dead debris destructive dramatic environment flow forest huacho lahar landscape material monkey mountain mountainside national nature outdoor park patagonia pewen piconero pine pino posteruptive pucon puzzle pyroclastic ravine river rock rocky scenery sendero south stone stratovolcano tail trail travel traverse tree trees trekking valley view villarrica volcanic volcano wood zanjon