Giant's Causeway cases the horizontal fracture has resulted in a bottom face that is convex while the upper face of the lower segment is concave, producing what are called "ball and socket" joints. The size of the columns is primarily determined by the speed at which lava from a volcanic eruption cools. The extensive fracture network produced the distinctive columns seen today. The basalts were originally part of a great volcanic plateau called the Thulean Plateau which formed during the Paleocene. According to legend, the columns are the remains of a causeway built by a giant. The story goes that the Irish
Fingal, Ontario Fingal, Ontario Fingal is a small community near the north shore of Lake Erie 12 km southwest of St. Thomas, Ontario, located within the township of Southwold in Elgin County. Located in Fingal is the historic RCAF Station Fingal, which was a major centre for air force training during World War II. Now named the Fingal Wildlife Management Area its 724 acres are now a protected natural area. The Southwold Township office and the Fingal Presbyterian Church are also located in Fingal, as well as the local businesses; Stan's Total Tire, Summit Food Distribution, Fingal Farm Supply Ltd and Advantage