Many of the uniformitarians (adhering to the darwinian timeline) though admit that the megalithic stone circles found mostly in Britain, France (Brittany), and Japan/Korea were built by one megalithic culture of seafarers, those structures found where the Canaanites ventured during the Ice Age, some now submerged such as Atlit Yam at the mouth of the Oren river of Canaan (now Israel) and off Kerama island of southern Japan, and many others still onshore, built during or after the Ice Age (which ended circa 1500 b. c.), the most famous Stonehenge and Gilgal Rephaim in Israel.