Sinkholes form typically as limestone dissolves. A caldera is created by the collapse of volcanic vault ceilings.
A Shakehole or Sinkhole.
sinkhole
A sinkhole is formed when the roof of a cave collapses.
A large hole formed when a roof of a cave collapses.
Its called a "caldera".
A large hole formed when a roof of a cave collapses.
A sinkhole forms.
Shakehole or Sinkhole - when the collapse extends to the surface. (Not all cave roof collapses disturb the surface above.)
Caverns and sinkholes are both formed in limestone bedrock by the process of dissolution, where groundwater dissolves the rock. Sinkholes are formed when the roof of a cavern collapses, resulting in a depression on the surface. So, caverns can be an intermediate stage in the formation of sinkholes.
A doline or shake-hole - and depending on the nature of both cave and collapse it can create an entrance to the cave.
A cavern is an underground chamber formed by erosion
You run for your life ;)