|Aggtelek and Slovak Karst||Domica Cave|
|Canadian Rocky Mountain Parks||Medicine Lake, which drains via an underground river into the spectacular Maligne Canyon (AB ev)|
|Greater Blue Mountains||Jenolan River / Styx River|
|Gunung Mulu||Clear Water Cave|
|Mammoth Cave||The River Styx is an underground river flowing through Mammoth Cave that exits the cave system and flows into the Green River.|
|Phong Nha - Ke Bang|
|Puerto-Princesa Subterranean River|
|Trang An||subterranean rivers (AB ev)|
|Wulingyuan||underground river inside the Yellow Dragon Cave|
Do you know of another WHS we could connect to Underground river?
A connection should:
- Not be "self evident"
- Link at least 3 different sites
- Not duplicate or merely subdivide the "Category" assignment already identified on this site.
- Add some knowledge or insight (whether significant or trivial!) about WHS for the users of this site
- Be explained, with reference to a source