Giant’s Causeway is the most popular geological tourist attraction in the island of Ireland and it was one of the places I definitely wanted to see. I have to say that it really is worth it.
Columnar basalt in itself is not an uncommon phenomenon but here it is especially well exposed and there is actually much more geologically interesting stuff to see than just the small cape named the Giant’s Causeway.
The weather was just awful — it was cold, windy, and rained all the time. I guess it was bad even according to Irish standards because there were surprisingly small number of visitors which was good.
Reddish layer of laterite (Port na Spaniagh laterite) underlying the Causeway basalts. Laterite is weathered basalt. In this case it indicates that there is a time gap between the formations of basalt layers.