 Eruptions near Ray Lake built a cinder cone known as Dragon Cone and concluded with an approximately long aā lava flow that has been radiocarbon dated at about 7,600 years old.This lava flow, known as "Dragon's Tongue", is at least thick at the proximal end, but thins to at the distal end, damming the southern end of Clearwater Lake.Tree molds are maintained within the lava flow at the lower end.