Růženin lom, Limestone quarry in Maloměřice, Czech Republic.

Růženin lom is a former limestone quarry on the slope of the Hády massif near Maloměřice. After extraction stopped, natural springs created several ponds surrounded by limestone rock formations.

Quarrying at Růženin lom ended in the second half of the 20th century, not the mid-century. The site was to be backfilled with clinker ash, but the exposure of a spring and the resulting ponds stopped that plan, and a species-rich wetland has since developed.

The quarry is officially closed for nature protection and reachable only through gaps in the fence, yet people still come to swim in the ponds in summer, and the site is popular with nudists. The Pozemkový spolek Hády (a ČSOP branch) installed information panels at the entrance and inside, and built the boardwalk "Stezka rákosím" to steer visitors toward considerate behaviour.

This site is reached via a paved path connecting Maloměřice to the Líšeň district and is accessible only on foot. Wear appropriate footwear as moisture can make the paths slippery.

The spring that foiled plans to fill the quarry with clinker ash feeds several ponds; the water is of relatively good quality, not warm. The site is officially closed for nature protection and reachable only through gaps in the fence, yet it is heavily used in summer, notably by nudists.