(netherlands)
Coordinates: 52.0474588193831, 5.50496140421184
Area: 2.26419677734375e-05 km²
OSM tags:
abandoned:building: bunker
architect: Ministerie van Oorlog
bunker_type: pillbox
heritage: 2
heritage:operator: rce
historic:period: 1939 - 1956
material: concrete
military: bunker
model: S4-type kazemat, bijnaam "Stekelvarken"
note: Grebbelinie
ref: GL122
ref:rce: 528638
website: https://www.bunkerinfo.nl/2016/02/grebbelinie-s4-kazemat-gl122.html