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Basalt lava flow, Antrim
![Credit: Rachel Moles](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/RocksAroundBritain/Causeway%20-%20Rachel%20Moles.jpg)
As the newly-formed basalt lava cooled, contraction cracks produced regular columns in the lower part of the flow. The columns are divided by dish-shaped cracks, forming domes and basins - which in this photograph are partly filled by rainwater.
Giant's Causeway, Antrim, Northern Ireland
![www.causewaycoastandglens.com](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/RocksAroundBritain/GiantsCauseway%20xtrawide.jpg)
www.causewaycoastandglens.com
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