Kälbersteine (487 m a.s.l.) is a quiet but surprisingly fascinating summit in the Lusatian Highlands of Saxony, Germany. What sets it apart is a small granodiorite rock formation on its top that researchers believe may have served as a prehistoric solar sanctuary — sunlight aligns through specific openings at the solstices and equinoxes. It is a great destination for hikers who enjoy a mix of nature and mystery.

The peak rises a notable 205 m above the Spree valley floor near Schirgiswalde, giving it a more dramatic feel than its modest absolute elevation might suggest. The slopes are dominated by spruce forest, with occasional red beech, sycamore maple and pedunculate oak surviving as remnants of the ancient mixed mountain woodland. The area is notably rich in springs and small streams, with lush marshy forest clearings adding to the atmosphere. In all seasons the surroundings feel peaceful and off the beaten track.

• Crostau (1 km north of the summit) — forest path, approx. 20–30 min, easy
• Schirgiswalde (approx. 3 km to the west) — longer forest approach, approx. 60–75 min, easy

• The summit rocks offer around 10 sport climbing routes, with a summit register kept on site.
• Information boards near the summit rocks explain the 'Götterhand' archaeoastronomy project — worth a read during your visit.
• Kälbersteine is part of the 'Sonnenpfade' (Sun Paths) tourist route.

Local legend says farmers hid their cattle here during the Thirty Years' War, giving the peak its name — 'Calf Stones'. Researchers from the Sohland Observatory have since suggested the rocks may have been used for solar observation long before that, possibly making this one of Upper Lusatia's oldest sacred sites.