The Holý vrch (Bare Hill) NNM is located in the Středočeský kraj – Central Bohemian Region and close to the town of Mělník. The protected area lies around 0.25km north-east of the village of Lhotka on an area of 5.2ha at elevations of 230-240 metres above sea level and was declared in 1957. The hill is covered with shallow and very sandy soils, without a strongly defined soil horizon.
From the name “Bare Hill” it is clear that this territory was not always forested, and we can also see from the presence of juniper (Juniperus communis) on the south-facing slopes which usually occurs in forests which were planted on former pasturelands. When we consider the age of the current forest stands (c. 120 years) and the tree species composition we can assume that the territory of the NNM is covered with a primary forest which was formed when former pastures were planted with trees.
At present the territory of the NNM is almost entirely forest covered. With the exception of several same-age stands with a predominance (95%) of Scots pine (Pinus sylvestris), Norway spruces (Picea abies) grow along the north-western edge of the monument among the rocky outcrops (the representation of spruces is given as 5% in the forest management plan). We can also find scattered examples of other tree species, such as birch, hornbeam, oak and beech in the monument.
In addition to the forest stands, with a population of the protected plant – the garland flower Daphne cneorum, we can also find a rocky outcrop of a steppe character with notable flora. Rare plant species which grow here include the Bohemian small pasque flower (Pulsatilla pratensis subsp. bohemica) and the feather-grasses Stipa joannis and Stipa pulcherrima.
The animals which have been recorded at Holý vrch NNM include common invertebrate species (especially insects) and common forest and grove birds, such as the song thrush (Turdus philomelos), nuthatch (Sitta europaea), short-toed treecreeper (Certhia brachydactyla) and the long-tailed tit (Aegithalus caudatus). Of the endangered bird species, the red-backed shrike (Lanius collurio) can be seen here occasionally.
The main target for protection of this territory is to maintain and expand the population of the critically endangered garland flower Daphne cneorum.
Reference: Management Plan for Holý vrch NNM for the period 2006-2015.