Dertiendagh by Maarten Bruns and Maria Postema is an exciting youth novel about sixteen-year-old Erik who searches for undiscovered bunkers in the dunes of Scheveningen. He and his friends encounter a tunnel system that might better have remained hidden under the sand ... Deep under the ground, the lines between the present and the past, between reality and nightmares, fade away. In a race against the clock, the youngsters must do everything they can to turn the dark tide and save themselves.
At this location you can play the Dertiendagh Escape Experience, a mobile puzzle game much like those played in escape rooms. By solving various puzzles based on the story of Dertiendagh, players have to decipher a code in order to hinder the plans of Everhart. The Dertiendagh Escape Experience lasts a maximum of 10 minutes and registration is not necessary. The experience is intended for groups of 2 to 4 players and it is recommended that players under the age of 12 be accompanied by an adult.
In addition, there will be unique Bunkerbrigade (from the book) T-shirts available for sale and, of course, you can buy Dertiendagh and have it signed by the authors.