Datenberg, Mountain summit in Thuringia, Germany.

Datenberg is a forested hill rising to 641.3 m above sea level in the municipality of Bad Tabarz, district of Gotha, about 200 metres above the western Thuringian Forest foreland. Its flanks are cut by the Mühlgrund and Lauchagrund, two gorge valleys that once gave medieval roads a relatively easy climb toward the Kleinen Inselsberg pass.

Behind a rocky spur on the Datenberg stood Leuchtenburg Castle and its outpost, Stolzenburg, two castles notorious for robber barons. Only documents and 19th-century descriptions record them today. Since the 1950s the site has been quarried for porphyry, used mainly as road gravel.

The north slope holds a rhododendron park created by Tabarz residents as a way to care for the natural surroundings. Visitors enjoy walking through this space to see the flowering plants up close.

The summit is accessible via marked hiking paths that connect to the Rennsteig long-distance trail, with several starting points available. Restaurants in the Lauchagrund valley at the foot provide places to rest and have refreshments during a visit.

The mountain features a downhill cycling track in its upper section, and narrow valleys on either side called Mühlgrund and Lauchagrund frame the slopes. These two valleys create an interesting landscape shape around the mountain.