The cave's name is recorded in 1819 a booklet on Zwingli's birthplace (Zwinglis Geburtsort, i.e. Wildhaus) by J. Fr. Franz: at the foot of Selun ridge there is a great cave, known as the wild man's hole, which at first is very broad and high, so that it could by entered by horse and wagon, then becomes narrower, and again wider, and in such alternation continues along various bends for a quarter of an hour before its end is reached.