Hohler Berg, Mountain summit in Wiesenttal, Germany.

Hohler Berg is a 522.6-metre summit north of the Wiesent valley between Muggendorf and Engelhardsberg. At its highest point stands a hexagonal steel-and-wood tower, twelve metres tall, built in 2011 and inaugurated on 15 April 2011 to replace an older tower. A mobile phone mast also stands near the summit, and the Doktorshöhle cave lies close to the top.

The caves formed during the Jurassic period through limestone erosion and remain visible today. The Oswald Cave, Wundershöhle, Doktorshöhle, and Witzenhöhle caves document this long geological development.

The summit serves as a destination for hikers from the surrounding region who appreciate its role as a local landmark. The observation tower draws visitors seeking wide views across the Fränkische Alb.

Hikers can reach the summit through several marked trails including Frankenweg and Heinrich-Uhl Weg, each offering different route lengths and difficulty levels. Check route options in advance and bring appropriate gear for mountain walking.

The mountain's name, Hohler Berg ("hollow mountain"), comes from the many caves inside it: Oswaldhöhle, Wundershöhle, Doktorshöhle and Witzenhöhle. The Doktorshöhle lies right by the summit. The 12-metre hexagonal steel-and-wood tower on top was inaugurated on 15 April 2011, replacing an older tower.