Caldera
Posted: 17 Jan 2009 13:34
A pressão esta aumentando, vai que a tampa explode...
Sokol1
http://en.wikipedia.org/wiki/Yellowstone_CalderaThe upward movement of the Yellowstone caldera floor – almost 3 inches (7 centimeters) per year for the past three years – is more than three times greater than ever observed since such measurements began in 1923.[17]
Sokol1