This is a landscape caused by the dissolution of Calcium Carbonate. The Calcium Carbonate is dissolved by slightly acidic water seeping into the ground over a long period of time. This process can be mimicked by creating a block of sugar cubes. Use an eyedropper to slowly drop water onto the cubes. Sugar is very soluble and the cubes will disappear into solution very quickly.
Feel free to be the first
Please review the linked page for context.
If you can think of something better than this,
please add it to the database