KARSTS
| Date | Clue |
|---|---|
| 2016-05-22 | Limestone areas with sinkholes and caverns |
| 2013-11-15 | Rough limestone regions with sinkholes and caverns |
| 2007-12-01 | Limestone regions with deep fissures and sinkholes |
| Date | Clue |
|---|---|
| 2016-05-22 | Limestone areas with sinkholes and caverns |
| 2013-11-15 | Rough limestone regions with sinkholes and caverns |
| 2007-12-01 | Limestone regions with deep fissures and sinkholes |