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
Bodorna Rock Columns Natural Monument Bodorna Rock Columns Natural Monument Bodorna Rock Columns Natural Monument () is a rock pillar with a height of 15 m and diameter 4 m near village Bodorna of Dusheti Municipality, Mtskheta-Mtianeti Georgia at a distance of 70-80 m from the S3 highway (Georgia) at 813 m above sea level. Natural monument is located approximately 150-200 m from Bodorna Church of Saint Virgin Mary built in the XVII century and is overlooking the Aragvi valley from the river right bank on the slopes of eastern exposure. Locally this deemed natural tower is known as "Tsotsola Rock" and rumored to have