What belongs in Caves & Underground?
Underground places require extra care. Describe only publicly accessible locations and mention light, moisture, signal coverage and whether guidance is needed.
Caves & Underground covers spots where this theme is central. The place should be recognizable, visitable and useful for someone actively looking for this kind of location.
Use the 4 subcategories to describe the place more precisely. Examples include Grotten, Oude mijngangen, Tunnels & bunkers, and Ondergrondse waterlopen.
Criteria for this category
Choose Caves & Underground when the activity, function or setting of the spot directly fits this theme. The description and photo should make it clear why the place belongs here.
If several labels could apply, choose the subcategory that most concretely describes what someone can do or see at the location.
What does not belong here?
A place does not automatically belong in Caves & Underground because it is beautiful, quiet or popular. The main feature must genuinely match this category.
Use another category when the place is mainly about food, views, history, sport, nature or public facilities and {name} is only a side detail.

