Teacher Input 6
Learner Activity 5
Teacher Input 7

Answer:  In limestone caves, such as the Cango Caves in Oudtshoorn.

  • Explain to the learners that the stalactites hang down and the stalagmites grow upwards from the floor of the cave.
  • Caves are formed when the water slowly dissolves the limestone underground. The dissolved limestone can crystallise when water evaporates.  This is a very slow process.  Water drops from the ceiling of the cave and then it falls on the floor.  As the water evaporates over time, a stalagmite will ‘grow’ in that spot. 
  • Show VIDEO CLIP 7: The Cango Caves in South Africa (1:31 min.).