The tour presents full-scale escape-tunnel reconstructions and offers a view into an original tunnel through a visitor tunnel. Joachim Neumann is the scheduled eyewitness; another eyewitness may substitute. The content is intended for adults and recommended for young people from the 10th school grade. Children under 7 cannot participate. Sturdy, closed shoes are required, and the route includes numerous stairs, some steep.

Details can change — check the event’s website before you go.