Summary:
- Groundwater dissolves minerals and rocks into ions.
- Groundwater deposits those ions into different types of structures.
- Limestone caves are the best place to see these structures.
- Caves are likely to be found in limestone where the groundwater level has gone down.
- This exposes the cave and its features.
- Stalactites are beautiful icicle-like formations.
- They form as water containing calcium carbonate drips from the ceiling of a cave.
- If a stalactite and stalagmite join together, they form a column.