When the methane ignites, the ground explodes up to 100 yards ahead of the advancing lava flow. Another fascinating feature of volcanic activity that can also be deadly is benches. Lava creates new land when it enters the ocean. This new land is called a bench. The lava enters the ocean and solidifies into shattered pieces, which slide down the underwater slope.
Rubble builds on the surface, giving the appearance of solid land.
But the bench is unstable and can collapse without warning into the sea. Heed signs warning of closed bench areas. Work Outdoors at GORP Jobs Click Here. All rights reserved.