Ключевые слова: abyss, america, brazil, cambara, canyon, cliff, cloud, coulee, crag, deep, defile, dissected, edge, environment, erosion, escarpment, extreme, field, forest, fortaleza, gaucha, geology, gorge, gulch, high, highland, imposing, landscape, lowland, meadow, mesa, outdoor, pampas, park, plain, plateau, precipice, ravine, rio grande, rock, sierra, south, steep, tableland, topography, tourism, travel, valley, weathering, wilderness,