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Los Glaciares National Park
Backpack the Pacific Crest Trail It would take you five months to walk the 2,650-mile Pacific Crest Trail from Mexico to Canada. But for a long weekend that’s high on thrills per mile, try the 17-mile stretch through Oregon’s Three Sisters Wilderness. Hiking Frog Camp/Obsidian Trailhead to South Sister Trailhead at Devils Lake. fir forests, waterfalls, jagged peaks, serene alpine lakes , plus the wondrous Obsidian Limited Entry Area, covered with the sharp-edged black rock.
Marble Caves of Patagonia in Chile – Lake Carrera. The lake is on the border of Argentina and Chile, and the caves are located on the side of Chile. The caves are the three main grotto: Chapel (La capillaries), Church (El Catedral) and Cave (Cueva). Visitors can explore the caves on a small boat or kayak, but only after the waters of Lake Carrera calm down and be serene.