(netherlands)
Coordinates: 52.18888571281364, 5.325699608021177
Area: 1.925830078125e-05 km²
OSM tags:
abandoned:building: bunker
architect: Ministerie van Oorlog
bunker_type: pillbox
heritage: 2
heritage:operator: rce
material: concrete
military: bunker
model: Szw Fr-type kazemat, bijnaam "Stekelvarken"
note: Grebbelinie
ref: E18
ref:bag: 0307100000552420
ref:rce: 528555
source: BAG
source:date: 2019-10-21
start_date: 1939
website: https://www.bunkerinfo.nl/2010/01/grebbelinie-szw-fr-kazemat-e18.html