Rosenmüller Cave, Karst cave in Muggendorf, Wiesenttal, Germany

Rosenmüller Cave consists mainly of a 16-meter-high main chamber and is 112 meters long after a new survey. The original entrance lay about 13 meters up the slope and could only be reached by rappelling; an 8-meter artificial entrance created in 1836 is still used today. Inside, the old guide path climbs over a sintered debris pile called the Parnass, and side passages lead to chambers such as the Wax Chamber.

Johann Ludwig Wunder, son of cave inspector Georg Wunder, discovered the cave in 1790. The Leipzig anatomist Johann Christian Rosenmüller was the first outsider to enter it, in 1793, and it took his name. In 1836 an 8-metre artificial entrance was cut so the cave could run as a show cave, which it did until 1960, making it one of the oldest in Franconian Switzerland.

The cave served as one of the earliest tourist attractions in Franconian Switzerland starting in the 1800s, drawing visitors curious to explore its passages. For generations, people navigated these chambers by candlelight, creating a distinct way of experiencing the underground world.

The cave lies about 600 m north of Muggendorf's centre, its entrance on the wooded southern slope above the Wiesent valley at roughly 430 m. Since 1836 visitors have entered through an 8 m artificial passage rather than the original 13 m-high shaft. Entry is barred from 1 October to 31 March for hibernating bats; the steel railing replaced the old stair handrail.

The old guided route climbs a sintered debris slope known as the Parnass, from whose top side passages lead into chambers such as the Wachskammer. Candle holders from the show-cave era still remain in the cave, a detail visitors can look for.