Line trail, Abcoude
Today I went for a short hike along a small bit of the Defence Line of Amsterdam. As Wikipedia notes, this line, built between 1880 and 1920, became obsolete as soon as it was finished thanks to the inventions of the plane and the tank.
I got off at Abcoude station and walked 5 kilometres along the river Gein towards the Fort at Nigtevecht, and the same distance back.
Willow has suffered:
A fortification just outside the main fort: