Frenzelsberg (474 m a.s.l.) is a compact basalt hill rising on the western edge of Seifhennersdorf in Upper Lusatia, Saxony, right on the Czech border. Don't let its modest height fool you — this wooded summit has geology, history and folklore packed into every hectare.

The hill is blanketed in forest, making it a pleasant escape in all seasons — cool shade in summer, a blaze of colour in autumn. A small, long-abandoned quarry on the slopes reveals striking columnar basalt formations, a genuine geological curiosity. The terrain is gentle and well suited to families and casual walkers. The atmosphere is quiet and unhurried, far from the crowds of larger tourist peaks.

• Seifhennersdorf (village parking) — forest path, approx. 30–40 min, easy

• The summit sits directly on the Czech–German border — check current border crossing conditions before your visit
• The basalt dome and the abandoned quarry are protected as a natural monument within Görlitz district

Local legend speaks of a hidden treasure somewhere on the hillside, and older residents of Seifhennersdorf still consider the mountain their 'weather hill'. The basalt here — known locally as 'blue stone' — was once internationally recognised as the reference type specimen for the nepheline-tephrite group, giving this small hill an outsized place in the history of geology.