Earth's oldest-known crater discovered in outback WA is 3.47 billion years old, study finds
The discovery of a 3.47-billion-year-old crater in WA's Pilbara region pushes back the age of the earliest-known impact site on Earth by more than one billion years.
7 Weird Rock Formations To Visit In California: Man-Made Or Erosion?
The formation is rare in the geologic world and ranks as one of the world's finest examples of columnar basalt. Its columns ...