Overcingeltunnel
From Underfoot
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| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | cave | Shell grotto in Nienoord | shell grotto | Wikidata | |
| site | mine | Botjes Zandgat | quarry lake, lake | Wikidata | |
| site | tunnel | Helperzoomtunnel | tunnel | Wikidata | |
| site | tunnel | Overcingeltunnel | tunnel | Wikidata | |
| site | tunnel | Papiermolen Tunnel | tunnel | Wikidata | |
| site | tunnel | 2009 | Gouden tunnel | tunnel | Wikidata |
| site | tunnel | 2017 | Esperantotunnel | pedestrian tunnel, cycling tunnel | Wikidata |


