Giant's Causeway with higher saline content than that found at the causeway. Although the basaltic columns of the Giant's Causeway are impressive, they are not unique. Basalt columns are a common volcanic feature, and they occur on many scales (because faster cooling produces smaller columns). The Belfast-Derry railway line run by Northern Ireland Railways connects to Coleraine and along the Coleraine-Portrush branch line to Portrush. Local Ulsterbus provide connections to the railway stations. There is a scenic walk of 7 miles from Portrush alongside Dunluce Castle and the Giant's Causeway and Bushmills Railway. Giant's Causeway The Giant's Causeway is an area of
Bodorna Rock Columns Natural Monument possibly in the V – VII centuries, and later during Timur's invasions of Georgia. The Georgian Chronicles reports that Timur's archers descended the column using ropes and shoot their arrows into the crowded cave. Nearby slopes has many similar man-made caves scattered around. Entire cave complex enjoys same protection as 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