GEBRO Verlag publishers are owned by the brothers Ulrich and Harald Röker based in Immenstadt in the Allgäu, Germany. Most of the guides are researched and produced by them using their 30 years of experience and new routing of routes graded into the upper french 8th grade. Their intention is to create worthwhile topoguides which allow the user to find the cliffs and routes fast and easy and to give already an idea of the shape of the cliff and the course of the routes when planning your next climbing day.