Columnar jointing in basalt, Montana (vertical)April 30, 2017/in /by Marli Miller lava, volcanic, BMMT, columns, columnar, colonnade https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2017-04-30 19:56:022022-02-05 02:09:30Columnar jointing in basalt, Montana (vertical)
