(netherlands)
Coordinates: 52.0723301419154, 5.474721287978569
Area: 9.830810546875e-06 km²
OSM tags:
abandoned:building: bunker
architect: Ministerie van Oorlog
building:material: concrete
bunker_type: pillbox
heritage: 2
heritage:operator: rce
historic:period: 1939 - 1956
military: bunker
model: Kolf
note: Grebbelinie
ref: GLK01
ref:rce: 528674
source: survey
website: https://www.bunkerinfo.nl/2011/01/grebbelinie-kolf-kazemat-glk01.html