The tufa rock formations became visible. This is a sedimentary rock that is formed by carbonate materials. Once underwater the tufa became a land bridge for animals to the lake’s islands. They also give the lake it other worldly look. So, although the tufa towers are natural, the fact that they are so visible above the surface of the lake is entirely our doing. It soon became obvious that the lake was beginning to die.
From the Upcoming ueue, submitted by taliesyn30.