The Giants Causeway Tank Tops

The Giant's Causeway is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic fissure eruption. It is located in County Antrim on the north coast of Northern Ireland, about three miles northeast of the town of Bushmills

Fingal Head on New South Wales' Tweed Coast is one of the few examples of this geological formation -- called columnar jointing -- in the world. The other, more famous, examples are the Giant's Causeway in Northern Ireland and Fingal's Cave in Scotland. No surprise that this and the Scottish formation are both named after the same ancient Scottish hero!