Located above the Netzbachtal (has nothing to do with the Pingen path or the Itzenplitzer Weiher) off the path - near a piece of coniferous forest - on the uphill side of the path behind a small "hill". The entrance itself is now mostly filled in and only the top tip can be seen as a hole under a tree (see pictures). Due to the very soft soil and the loose undergrowth under the leaves, it is better to cover the last few meters on foot.