Mlýneček

Mlýneček is a small natural monument perched on the Na Skalce hilltop in the Všerubská vrchovina highlands, in the Domažlice District of the Plzeň Region, roughly 1.2 kilometers southwest of the village of Mlýneček near Mrákov. The protected zone itself is tiny — just 0.6487 hectares, sitting at elevations between 506 and 515 meters — while a wider buffer zone of over 2 hectares extends into neighboring cadastral areas to shield it from disturbance.

What makes this site worth protecting?

Unlike most nature reserves built around plants or wildlife, Mlýneček exists to protect rock. The outcrop preserves veins and stumps of egirine-riebeckite syenite, a pale gray igneous rock that pushed up through fine-grained amphibolite bedrock during Cambrian-era volcanic activity. What sets it apart is rarity: geological surveys suggest this is likely the only known locality of this particular syenite type anywhere in Czechia. For anyone interested in petrography or regional geology, it's a chance to see a rock formation with essentially no equivalent elsewhere in the country.

How long has the site been protected?

The protection history stretches back to 1990, when the Domažlice District National Committee designated the outcrop a protected natural formation on October 22 of that year. It took over two decades for the site to gain formal natural monument status, granted by the Plzeň Region administration on February 29, 2012. The location is listed in the Czech Republic's central nature conservation registry under number 1320.

What plants and animals live around the outcrop?

Vegetation and wildlife aren't the reason this site is protected, but the surrounding land is far from barren. Spruce monoculture dominates the area, with birch, rowan, and willow growing along the margins. Birdwatchers passing through might spot species typical of these coniferous stands, including coal tit, goldcrest, and mistle thrush. The soils here are mostly ranker and pseudogley types — thin, rocky profiles consistent with the exposed syenite outcrops nearby.

What is the climate like at Mlýneček?

The region falls into a mildly warm climate zone, classified as MT4. January temperatures typically average between −2°C and −3°C, while July averages sit around 16–17°C. Annual precipitation ranges from 500 to 750 millimeters, figures fairly typical for the upland terrain along the Czech-Bavarian border area.

How do you get to the Mlýneček natural monument?

The nearest settlement is the village of Mlýneček, part of the municipality of Mrákov in Domažlice District. The protected area itself sits atop Na Skalce hill, about 1.2 kilometers southwest of the village, within the cadastral territory of Klíčov u Mrákova, which also covers the nearby settlement of Nový Klíčov. It's a quiet, low-key spot within the Všerubská vrchovina landscape, drawn mostly by geology enthusiasts and hikers exploring the less-trodden trails of the Plzeň region.

Frequently asked questions

What is the Mlýneček natural monument? It's a small, 0.65-hectare protected area safeguarding a rare outcrop of egirine-riebeckite syenite on the Na Skalce hilltop in the Všerubská vrchovina highlands.

Why is this site geologically significant? The rock found here is thought to be the only known locality of this particular syenite type in Czechia, formed when Cambrian volcanic activity pushed it through the surrounding amphibolite bedrock.

When did the site become protected? Protection began in 1990, with the area formally upgraded to natural monument status in 2012 by the Plzeň Region administration.

Where exactly is the monument located? About 1.2 kilometers southwest of the village of Mlýneček, within the municipality of Mrákov in Domažlice District, in a cadastral area that also includes Nový Klíčov.