Lake Eacham (originally Yidyam or Wiinggina) is a popular lake of volcanic origin on the Atherton Tableland of Queensland, Australia, within the World Heritage listed Wet Tropics of Queensland. It is within the locality of Lake Eacham in the Tablelands Region local government area. Origins Geology Lake Eacham (Yidyam) was formed over 9,130 years ago when molten magma from the Earth's mantle rose to the surface and heated the water table. The steam that resulted from the boiling water was trapped underground, until massive explosions signalled its release. Huge cracks appeared in the ground and the trees that once lathed the mountainside were levelled and burnt. Eventually, after the eruptions, groundwater filled the crater and the trees grew back, creating the tranquil lake used today by families and tourists for recreation. There are no streams that flow into or out the lake, water is only lost through soakage and evaporation and only replenished through rainfall, the level can fluctuate up to 4 metres between wet and dry seasons. The nearby Lake Barrine formed in a similar way, over 17,300 years ago. Mythology The local Ngadjon -jii (Aboriginal peoples), name the lake Wiinggina and tell a parallel story of the Lakes origins, as follows "Two young fellas were trying to spear that wallaby. But they missed and hit a flame tree. That’s a sacred tree. The young fellas not supposed to be out hunting. They weren’t initiated. Their elders told them to stay put, not go out hunting. But they didn’t listen. When they pulled their spear out, part of a grub came out with the spear, which was a witchetty grub. They started cutting down that tree to get more grubs. When they cut down that tree, the ground began to shake. Those two fellas had made Yamini (rainbow serpent) angry. Then the sky turned orange, then all these people back at the camp, the earth went from underneath them, sucked them in, whoosh, they all got drowned. Where they were camped became Bana Wiingina (Lake Eacham)." (Warren Cannendo, Ngadjon-Jii) This story, in all its local versions, is part of an indigenous oral history and mythology believed to be an oral record recalling those volcanic events more than 10,000 years old. European history Back in 1886, Lake Eacham (Yidyam) was included within original survey plans subdividing the whole of the Lake Eacham area into farming blocks. By 1888, however, the