Geology of Ireland longest known free-hanging stalactites. 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
Secret of the Cave raw footage was shot. The cave, a central part of the film, was not discovered until 2 or 3 days before the scheduled shoot. It was discovered by a crew member, walking during a break. Secret of the Cave Secret of the Cave is a 2006 student film by the School of Visual Art and Design at Southern Adventist University. The film is an adaptation of the 1920 children's story of the same name by Arthur S. Maxwell (also known as "Uncle Arthur"). It was released on DVD in September 2007 and is distributed by First Look Studios in conjunction