Geology of Ireland Geology of Ireland The geology of Ireland consists of the study of the rock formations in Ireland. The island contains rocks from every age from Proterozoic to Holocene and a large variety of different rock types is represented. The basalt columns of the Giant's Causeway together with geologically significant sections of the adjacent coast have been declared a World Heritage Site. The geological detail follows the major events in Ireland's past based on the geological timescale. The oldest known Irish rock is about 1.7 billion years old and is found on Inishtrahull Island off the north coast of Ulster. Outcrops
Prometheus Cave Natural Monument makes Prometheus enchained to the bluffs of Khvamli, being perpetually tortured by a raven.) In a year cave was refurnished and reopened to visitors on May 26, 2011. Prometheus Cave Natural Monument Prometheus Cave Natural Monument () also known as "Kumistavi Cave" () and "Tsqaltubo Cave" () is a karst cave located in Tsqaltubo Municipality in Imereti region of Georgia. The total length of the cave is about 11 km, of which 1060 m are open to visitors. Cave has total of 22 halls of which six are currently open to tourists. The cave was discovered and studied by Georgian