The Jankusmauer is a legendary, large granite formation on the northern edge of the village of Liebenau.

The so-called "Devil's Cauldrons", one of which is always dry and the other always filled with water, are real sources of energy "for recharging" and are easily accessible on foot. Some skill is required to climb the large granite rocks of the Jankus Wall. Since 2013, there has also been a summit cross on the Jankusmauer, which was erected by the Liebenau local group of nature lovers.