It is a sink hole if it reaches the surface.
This is called a sinkhole.
Sinkhole
The correct term is false ceiling. Fall ceiling isn't correct.
A ceiling partition is a track on the ceiling that may have a metal or wooden wall fitting into it. This divides a room by the ceiling support.
Penn's Cave is located in the topographic region of Pennsylvania known as the Ridge and Valley. According to the studies done in the 1970's Penn's Cave contains 600,000 feet of volume. Penn's Cave is 30 million years old. The Caves in Pennsylvania are of four principle patters, which are Linear, Angulate, Branch Work and Network Mazes. Penn's Cave was formed in the Nealmont and Linden Limestone formations of the Ordovician Age.
' types of ceilings can a) contact ceiling b) suspended ceiling c) furred ceiling
a suspended ceiling
When rock above a cave collapses, a sinkhole is formed.
A sinkhole is formed when the roof of a cave collapses.
When rock above a cave collapses, it forms a sinkhole. Sinkholes are depressions in the ground that are often caused by the erosion of underground caves or channels.
Erosion of the walls supporting the cave ceiling create an increase in the amount of overlying rock being supported. At some point, the weight becomes too great, and the ceiling collapses.
A large hole formed when a roof of a cave collapses.
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.)
it is formed by the droplets falling from the stalactites in the ceiling of the cave.
Stalactites. You may also notice distinct erosion patterns in many cave ceilings, formed when the passage was filled with water at an earleir stage in the cave's development.
stalactite.... the one that formed below it is called stalagmite...
A cave deposit formed by precipitation of calcium carbonate from groundwater entering an underground cavern which forms a hanging feature from the ceiling or wall of the cave.