Close-up of right side of lava pool shown in previous image a few s...
Detailed Description
Close-up of right side of lava pool shown in previous image a few seconds later, showing early stage of gas-piston draining. Pond level has already dropped several meters. During the next 30 seconds the pond level dropped 25-30 m (80-100 ft) as gas escaped from the pond, creating a void immediately filled by the draining lava.