Geography
Why Karst Landscapes Form in Soluble Limestone Bedrock Regions
Quick fact
Rainwater is naturally acidic because it absorbs carbon dioxide from the atmosphere, forming a weak acid that can slowly dissolve limestone—a process that over thousands of years carves entire underground worlds.
Why this is interesting
You might have seen dramatic landscapes with sinkholes, caves, and disappearing streams—ever wondered why they appear only in certain regions? The secret lies in the bedrock itself, and a simple chemical reaction with rainwater.