hasUndergroundLength
P121757
predicate
Indicates the extent of an object or structure that lies below ground level, measured as its underground length.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| undergroundExtent | 1 |
| undergroundLengthApproxKm | 1 |
Sample triples (3)
| Subject | Object |
|---|---|
| Tarnowskie Góry underground mining galleries | several kilometres of accessible galleries ⓘ |
| Timavo River | 40 via predicate surface "undergroundLengthApproxKm" ⓘ |
| Combe Down quarries | several kilometres of workings via predicate surface "undergroundExtent" ⓘ |