Zmrzlík, Natural monument in Prague, Czech Republic.

Zmrzlík is a protected natural area in Prague featuring woodlands, meadows, and diverse plant and animal habitats. Walking trails wind through the site, allowing visitors to explore and observe the different environments and wildlife present.

The area was placed under protection in 1988 when authorities recognized its importance for preserving natural habitats within Prague. This designation was part of a broader effort to safeguard green spaces across the city.

The name Zmrzlík is said to come from a local figure called Zmrzlík, and the site preserves an old agricultural landscape of goat pastures and small orchards. Since the 1980s, sheep grazing has ended and thorny black locust has spread. Look for the small abandoned quarries around the village, where fossils are still found.

The monument lies on the left slope of the Mlýnský potok, split into three parts linked by a buffer zone, with the Draska ravine between Zmrzlík and Zadní Kopanina. Access is on foot from Radotín or Zadní Kopanina; the terrain is uneven limestone with old quarry walls, so wear sturdy shoes. The site is managed by AOPK ČR's Central Bohemia office together with the Prague Magistrate.

The articulated brachiopod Atrypoidea renitens is found in Zmrzlík's limestone in a form of preservation recorded nowhere else. The site also holds one of the youngest Silurian basalt outflows of the Prague Basin, a body of amygdaloidal basalt with tuffs cutting the graptolite shales.