Denneberg, Mountain summit in Oberallgäu, Germany.

Denneberg is a mountain summit in the Allgau Alps with an elevation of approximately 1,400 meters. The peak has a distinct profile and is part of a connected hiking area with several neighboring summits.

The Denneberg lies in the Prodel ridge chain of the Allgäu Nagelfluh layers, a conglomerate rock formation, and belongs entirely to the Nagelfluhkette Nature Park; its south slope is a wildlife protection zone. The summit cross stands at 1408 m, below the 1427 m top, and the Oberdenneberg-Alpe near the summit lies abandoned. The Schmidstobel stream rises on the mountain above 1200 m and flows into the Konstanzer Ach.

On the summit the Thalkirchdorf yodelling group regularly holds the Denneberg Messe, an open-air gathering on the broad, treeless top. The surrounding slopes carry named alps: the ruined Oberdenneberg-Alpe just below the summit, the Schwandalpe at 963 m on the north side, and the Hinter-, Vorderbürchgeschwend- and Holzschlagalpe on the south slope.

The summit is reached on foot from Thalkirchdorf in the market of Oberstaufen; no cable car serves the Denneberg. In summer it is a common stage goal on routes along the Prodel ridge, and the broad, treeless top gives the best view over the Konstanzer Tal to the Salmaser Höhen ridge opposite. The summit cross stands at 1408 m, slightly below the 1427 m high point.

The broad, treeless summit is the only one on the Prodel ridge, giving the best view over the Konstanzer Tal to the Salmaser Höhen ridge opposite. The summit cross stands at 1408 m, below the 1427 m top, and the Thalkirchdorf yodelling group holds its Denneberg Messe here regularly.