The past 30 million years ago, when the volcano. A huge eruption occurs. Spraying the ashes down mess is more than 100 m thick enough layer of stone layers begin to cool.
Relive 30 million years ago when a volcano caused major crackling. Spewing ash into the deposition is over 100 meters thick layer of rock that has cooled.
Back to the past 30 million years ago, when the volcano"s eruption big spraying ash deposition เป็นชั down. Thicker 100 meters. When I stone cold start.