Altitude: 490–495 m above sea level
Area: 3 ha
Material: washed fine substrate from the copper ore processing factory
Copper ore was mined mainly during the 1950s and 1960s at the Bohumír mine, which closed in 1965. Ore was also imported from Slovakia. The substrate from the ore processing factory contains toxic substances that inhibit the development of vegetation. Due to these specific conditions, only a sparse population of dwarf pine and birch trees and sometimes also heather grows there; large areas of vegetation are completely devoid of vegetation. The area is partially flooded and thus provides conditions for the occurrence of wetland species. Management of the site (cutting of trees, mowing of vegetation) has been carried out since 2014 by ČSOP Jaro Jaroměř.
Fungi
Sand-loving species: Mountain Cup (Geopora arenosa), Blushing False Truffle (Rhizopogon roseolus)
Bound to pioneer woody plants: Lepiota pseudolilacea dapperling, Ramaria myceliosa coral fungi, Alder Bolete (Gyrodon lividus)
Plants
Woodland species: Common Wintergreen (Pyrola minor)
Meadow species: Common Twayblade (Listera ovata), Dark-red Helleborine (Epipactis atrorubens)
Moist-loving species: Broad-leaved Marsh Orchid (Dactylorhiza majalis), Early Marsh-orchid (Dactylorhiza incarnata), Variegated Horsetail (Equisetum variegatum)
Invertebrates
Arid-loving species: Cylindera arenaria tiger beetle, Green Tiger Beetle (Cicindela campestris), Northern Dune Tiger Beetle (Cicindela hybrida), Cicindela sylvicola tiget beetle
Wetland species: Northern Damselfly (Coenagrion hastulatum), Lestes virens spreadwing, Common Hawker (Aeshna juncea), Norfolk Hawker (Aeshna isosceles), White-faced Dragonfly (Leucorrhinia dubia), Scarlet Dragonfly (Crocothemis erythraea), Large White-faced Darter (Leucorrhinia pectoralis), Black Darter (Sympetrum danae), Northern White-faced Darter (Leucorrhinia rubicunda)
Vertebrates
Arid-loving species: Sand Lizard (Lacerta agilis), Slow Worm (Anguis fragilis)
Combination of drier and wetland habitats: Natterjack Toad (Epidalea calamita), European Common Toad (Bufo bufo); Common Lizard (Zootoca vivipara), Grass Snake (Natrix natrix)
Wetland species: Alpine Newt (Ichthyosaura alpestris), Smooth Newt (Lissotriton vulgaris), Northern Crested Newt (Triturus cristatus)