Magma Lake

At www.dailygalaxy.com/my_weblog/2016/11/colossal-body-of-magma-discovered-… … Scientists have discovered the existence of a huge magmatic lake (composed of magma and water) 15km across below a dormant volcano in Bolivia. The body of water, which is dissolved into partially molten rock at a temperature of 1000 degrees celsius is comparable in size to some of the world's biggest lakes on the surface. The water may go some way to explain how and why volcanoes erupt – if water is commonly found beneath volcanoes. Different thinking sometimes comes up trumps.