A sinkhole is formed when the roof of a cave collapses.
A sinkhole forms.
Its called a "caldera".
A large hole formed when a roof of a cave collapses.
A large hole formed when a roof of a cave collapses.
Shakehole or Sinkhole - when the collapse extends to the surface. (Not all cave roof collapses disturb the surface above.)
A large hole in the ground formed when the roof of a cavern collapses is known as a sinkhole. Sinkholes can vary in size and are typically caused by natural processes such as erosion and the dissolution of soluble rocks like limestone.
Sinkholes form typically as limestone dissolves. A caldera is created by the collapse of volcanic vault ceilings.
The large circular depression at the top of a volcano that forms when the roof of the magma chamber collapses is called a caldera. Calderas can be huge in size and are formed during explosive volcanic eruptions or when the magma chamber empties and the summit collapses into the void left behind.
sinkhole
You run for your life ;)
another floor