The reserve Rosh aikra is located in a natural cleft (nikra) in the limestone rocks of the ridge, outstanding in the sea. Grottoes are located on the border between Israel and Lebanon. The waters of the sea on one side, and geological processes on the other, formed caves with a total length of about 400 meters at the junctions and strata of various rocks. There is a tradition that grottoes and the very soft rock rocks served in ancient times to create tunnels and passages in the ridge. This ridge separates the valleys of present-day southern Lebanon from the valleys of the Lower Galilee in present-day Israel. Tradition ascribes to Alexander of Macedon, the use of through caves during the march to the south, after the conquest of Tire in 333 BC. e. Translated with Google Translate