I never liked onions, but these #onion rocks formed by spheroidal weathering at Giants Causeway I love! Basalt comes in many shapes here. http://pic.twitter.com/S138LGH0BG
— TheGreatGeologyCycle (@GreatGeology) August 14, 2017
via Twitter https://twitter.com/GreatGeology
August 14, 2017 at 02:56PM
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