on each tourist place as never before!
Grand Canyon is the grandest example of arid earth erosion which remained active for four geological eras. The Zion National Park with its canyon and land formations is another typical weathered landscape. The Rock of Gibraltar in the tip of the Iberian Peninsula is a monolithic rock made of limestone. In Spain, Jameos del Agua is a baffling volcanic cave formation with a crystal blue lake. Davolja Varos in Serbia is a puzzling formation of earth pyramids also termed as 'devil's town'.
A unique earth formation in the desert of Mauritania is the 'Richat Structure' caused by erosion of a volcanic dome. This was used as a landmark for space going vehicles. In Turkey, the Cappadocia is a natural wonder of a series of chimney shaped rocks with underlying caverns. Wulingyuan with its three thousand sandstone pillars reaching up to a height of 200 meters interspersed with ravines, waterfalls, streams, caves and natural bridges is a veritable wonder in China.
In Australia, the 'twelve apostles' arranged along Great Ocean Road in Victoria state are rock formations caused by water and wind erosion over millions of years. Uluru or Ayers Rock is the world's largest monolithic rock structure. Located in Kata Tjuta National Park in Northern Territory of Australia, this 1700 feet high rock structure covers an area of 35 square kilometers.