Jutting off in straight lines from a massive crater like two bilby ears near the Moon's South Pole, is a pair of valleys similar to the Grand Canyon in ... it formed after a giant impact with ...

Enshi Grand Canyon-Tenglongdong Cave UNESCO Global Geopark in the southwest of Hubei Province, China, is home to world-famous erosion and dissolution landscapes and the rich cultural heritage of the ...

Globally, caves provide important refugia for bats. The Grand Canyon, more than 400 km (250 mi) long, consists of steep-sided, rocky formations with hundreds to thousands of natural caves. Two of ...

Rampart Cave is 300m high in the walls of the beautiful and iconic Grand Canyon. Discovered in 1936 and full of animal dung it is an important research site. The cave shows how crucial scientific ...