MUSINGS IN NATURAL HISTORY
Sunday, 21 January 2018
GIANT'S CAUSEWAY: NORTHERN IRELAND
The Giant's Causeway is a spectacular expanse of interlocking hexagonal basalt columns formed from volcanic eruptions during the Paleocene some 50-60 million years ago.
Highly fluid molten basalt intruded through chalk beds which later cooled, contracted and cracked into hexagonal columns, creating a surreal visual against a dark and stormy Irish Sea.