The Gillenbach north of Oberzell has a 3,000 m long and up to 30 m deep gorge created, whereby high outcrops were exposed in Quaternary and Tertiary deposits. In the central region, about 1,200 meters north of the upper cell, are about 8 m high on cliffs. The cache is located near the outlet of the ravine and may be well reached during a hike along the Hotterloch.