6400km 64km 64000km 640km
Argentina Peru Ecuador Mexico
Milford Sound Great Rift Valley Colca Canyon Death Valley
Canada Chile New Zealand Norway
Yangtze Gorges Death Valley Grand Canyon Colca Canyon
Grand Canyon Great Rift Valley Colca Canyon Himalayas
Canada New Zealand Australia United States
Valley Fjord Lake Gorge
Milford Sound Great Rift Valley Monument Valley Death Valley
Grand Canyon Great Rift Valley Colca Canyon Death Valley