The Růžička’s Quarry NNM was declared in 1974 and again in 1990 on an area of 1.32ha. The abandoned quarry lies around 1km north-west of the municipality of Čelechovice na Hané in the Olomoucký kraj - Olomouc Region.
Růžička’s Quarry lies on the south-eastern slopes of Velký Kosíř hill (442m) and on the border of the Bouzovská vrchovina Hill Country and Prostějovská pahorkatina Hilly Land geomorphological sub-units. The protected area lies at elevations of 295-314 metres above sea level. The basement in the quarry is built of shallow-water limestones of mid Devonian age, which emerge from the Tertiary and Quaternary sediments. The Čelechovice Devonian is classified as part of the development of the Moravian Karst. The so-called “red coral layers” can be seen around the whole circumference of the quarry and these layers are rich in the fossilised representatives of Palaeozoic marine fauna. On the edges and the floor of the quarry we can only find shallow soils (Rendzina) with a weakly developed A-horizon and a considerable representation of clastic material.
From a botanical standpoint the district around Velký Kosíř Hill is among the most notable territories in central Moravia due to the great geomorphological and geological diversity of the substrate. The territory has high plant species diversity, but is also interesting from a phytogeographical standpoint as the northernmost locality for a range of thermophilous species and communities in Moravia. The majority of the territory of the actual quarry is covered with shrub growths of hazel (Corylus avellana), spindle tree (Euonymus europaeus), blackthorn (Prunus spinosa), dogwood (Cornus sanguinea), wild privet (Ligustrum vulgare) and various types of roses (Rosasp.). Among these shrubs we can find scattered trees such as pendunculate oak (Quercus robur) and ash (Fraxinus excelsior) and many old fruit trees. On the grassy slopes we can find thermophilous grasslands of the Bromion erecti alliance, with species such as yellow oat-grass (Trisetum flavescens), intermediate wheat-grass (Elytrigia intermedia), dwarf sedge (Carex humilis) and the spring sedge (Carex praecox). Other herbs which we can observe on these grasslands include squinancywort (Asperula cynanchica), the Hungarian thyme Thymus pannonicus, the sand cinquefoil Potentilla arenaria, sickle hare’s-ear (Bupleurum falcatum), wild liquorice (Astragallus glycyphyllos) meadow clary (Salvia pratensis), the aster Aster amellus, agrimony (Agrimonia eupatoria), knapweed broomrape (Orobanche elatior), the “red-fruited” dandelion (Taraxacum sect. erythrosperma), the bastard toadflax Thesium dollineri, the Austrian mullein Verbascum chaixii subsp. austriacum, betony (Betonica officinalis), the umbellifer Peucedanum alsaticum, cut-leaf self-heal (Prunella grandiflora), prostrate speedwell Veronica prostrata and others.
The Růžičkův lom Quarry and its surrounding are a notable refuge for many animal species. When entomological inventory research was carried out in 2004 on the territory of the reserve – 40 butterfly species were recorded as well as 5 species of burnets and white-spotted Arctiidae. On the larger territory of the Velký Kosíř Nature Park a total of 36 ant species have been recorded. Of the 13 recorded mollusc species the most notable are the 3 species from the NT (Nearly Threatened) category – the snails Granaria frumentum, Cepaea vindobonensis and Pupilla muscorum. The most significant insect species which live around the quarry include the dor beetle Odontaeus armiger, the jewel beetle Anthaxia candens, the longhorn beetle Dorcadion fulvum and the rare rove beetle Claviger longicornis.
The south-eastern slopes of Velký Kosíř Hill are also an exceptional ornithological locality. Inventory research carried out in 2004 recorded 27 bird species, of which 5 species nest inside the Růžička’s Quarry. The most notable of these birds are the critically endangered corn bunting (Miliaria calandra), Syrian woodpecker (Dendrocopos syriacus) and the wryneck (Jynx torquilla) in the surroundings of the quarry.
Růžičkův lom NNM is included in the Natura 2000 network as a part of the Kosíř – Lomy proposed Site of Community Importance.