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
Cave of the Ramban Cave of the Ramban The Cave of the Ramban is located in the southern cliff of the Upper Kidron Valley, on a slope descending into the Arab neighborhood of Wadi al-Joz, Jerusalem. It is believed by some to be the traditional burial place of Nahmanides (also known as Ramban), a foremost rabbinical scholar during the medieval era. The large rock-hewn cave, measuring 19 by 20 m, reaches a height of 3.5 meters and is supported by two columns. The area once functioned as an ancient underground stone quarry. Above the façade, in the upper portion of the cliff, are the