Thalmassing maps one tree: St. Wolfgang's Oak, a hollow pedunculate oak whose great horizontal limb, over ten metres long, has rested on three props for more than a century. It burned in 1878 and again in 1909, the second time on St. Wolfgang's day, and was restored in 1972. In January 2025 it measured 9.80 metres round, and in June 2025 it became Nationalerbe-Baum number 48. Its age is disputed, from about 500 to 800 years.
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Pedunculate Oak (Quercus robur) · 500-800 years · Neueglofsheim (Thalmassing), about 15 km south-east of Regensburg
Legend says St. Wolfgang preached from this oak's great sideways limb, and for more than a century that limb has needed help to stay up. Over ten metres long, it rests on three props, already in place in a photograph from 1905.
The tree has survived more than its share. It burned in 1878 and again in 1909, the second time on St. Wolfgang's own day. Lightning has struck it repeatedly. The trunk is hollow, and an oval opening marks where an ancient limb broke away. In 1972 the district of Regensburg and the municipality of Thalmassing restored it.
It is one of the largest oaks in Bavaria: 9.80 metres round at chest height in January 2025, on a trunk so buttressed with knobs and root flare that every figure depends on where the tape goes. In 1905 it measured 8 metres at one metre up. It stands about 18 to 20 metres tall.
Nobody agrees on its age. Published estimates run from about 500 to around 800 years, and mentions range from 400 to 1,300; the legend's 1,250 years is a story, not a measurement. In June 2025 it was named Nationalerbe-Baum number 48, a national heritage tree, on top of its standing as a Bavarian natural monument.
It stands on a meadow beside a forest path, about 300 metres east of Schloss Haus and fifteen kilometres from Regensburg, free and open at any hour.