Complex sentence: The Anti-Lebanon mountains mark the border between Syria and Lebanon; the range has peaks of over 10,000 ft., and intercepts precipitations from the Mediterranean sea, so that the region of Damascus is sometimes subject to droughts.
Split into simpler sentences: The Anti-Lebanon mountains mark the border between Syria and Lebanon. The range has peaks of over 10,000 ft. and blocks precipitation from the Mediterranean sea, so that the region of Damascus is sometimes subject to droughts.