A stalactite.
I would call it a cave in.
They are formed by the deposit of minerals. They are left behind by evaporation.
A sinkhole
A large hole formed when a roof of a cave collapses.
Snow is heavy and as it piles up on a flat roof it gets heavier. Too much snow on a roof and it will cave in.
If they're in a cave,hanging from the roof, they are stalagtites. A stalagtite holds tight to the roof, and a stalagmite grows from the ground up and might someday touch the roof.
Stalactites. Those growing up from the floor are Stalagmites. Their "stony" material is usually the mineral calcite (crystalline calcium carbonate).
Hanging down from the cave roof are stalactites.
Stalactites are found hanging from the roof of a cave, as opposed to stalagmites, which grow up from the floor. Remembering the difference is easy - stalactites are "tite" to the ceiling!
The roof of a cave is referred to as the "ceiling" or "overhang".
stalactites are a deposit, usually of calcium carbonate, shaped like an icicle,hanging from the roof of a cave or the like, and formed by thedripping of percolating calcareous water.
A sinkhole is formed when the roof of a cave collapses.
It depends on where the cave was...
icicle
A deposit on the roof of a cave is typically referred to as a stalactite, which is a mineral formation hanging from the ceiling that is formed by the dripping of mineral-rich water. Stalactites are a common feature in caves and can vary in size and shape depending on the minerals present in the water dripping from the cave ceiling.
Stalactite
No, a stalagmite forms on the cave floor when mineral-rich water drips and deposits sediment, creating a mound-like structure. On the other hand, a stalactite hangs from the cave's ceiling as mineral deposits accumulate and form a tapering, icicle-like shape.