Skalka (382 m a.s.l.) is a small twin-peaked hill near Doksy in northern Bohemia, a quiet spot that rewards anyone curious about the volcanic past of this landscape. It's not a dramatic summit, but its geology and forest-covered slopes make for a pleasant, low-key outing.

The hill is a dome-shaped neovolcanic knoll built from subvolcanic basaltoid breccia, with a vein of olivine sodalitite running through it. That same vein created a second summit, Štědrá (372 m), just 250 metres to the north-northeast, forming the distinctive twin-hill formation. A longer trachyte vein also stretches northeast from Skalka. Both summits still show traces of small abandoned quarries, and the whole area is cloaked in forest - deciduous higher up, coniferous lower down - giving it a cool, shaded feel in summer and a colourful glow in autumn.

• From the Doksy - Zbyny road (parking south of Skalka) - forest path approach, short walk, easy difficulty
• From the recreational facility at the northeastern foot of Štědrá - alternative access from the other side of the twin-hill

• A path circles the entire twin-hill along the slope, but no trail leads directly to either summit
• The nearest marked trail (green) runs west of Skalka, connecting Nová Skalka and Korecký vrch

For geology enthusiasts, Skalka and Štědrá offer a rare chance to see how a single volcanic vein can shape two separate summits.