Category
page 1Ring dikes
Mount Sinai
mountain in the Sinai Peninsula of Egypt
Ben Nevis
highest mountain of Great Britain
Aïr Mountains
mountain range in Niger
Richat Structure
circular feature in the Sahara desert
Pilanesberg National Park
Wildlife reserve in an extinct volcano in the North West Province, South Africa
Kondyor massif
mountain
Pilanesberg
The Pilanesberg (formerly Pilandsberg) is a mountain in the North West Province, South Africa. The mountain is an ancient volcanic structure, circular in shape, that rises from flat surrounding plains. It is formed by three concentric ridges or rings of hills, of which the outermost has a diameter of about 24 km. The Pilanesberg is located 100 km to the North-West of Pretoria and is for the greater part enclosed in a protected area known as Pilanesberg National Park.
Sutter Buttes
complex of eroded volcanic lava domes in California
St. Francois Mountains
mountain range in United States of America
Raditladi Basin
crater on Mercury
Adrar Bous
mountain in Niger
Ambohiby Massif
mountain in Madagascar
Mount Shaw
mountain in United States of America
Ossipee Mountains
mountain range in New Hampshire, United States
Belknap Mountain
mountain in United States of America
Tosham Hill range
mountain range in Haranya, India
ring dike
circular igneous intrusion