This project is my prediploma in collaboration with Andreas Seibert from february to july 2005. In this magazin we show a special part of Darmstadt, underground world behind closed doors. Locations we visited are the catacomb system and the water reservoir on top of the Mathildenhöhe in Darmstadt. We spent much time there to play with lightning and to find the most interessting places in this spooky underworld. A3, 26 pages, cmyk digital print, last class of Prof. Henner Prefi at Hochschule Darmstadt.