Karlštejn NNR from the south-west across the Berounka river valleyThe vetchling Lathyrus pannonicus subsp. CollinusThe spring pheasant’s eye (Adonis vernalis) flowers from March onwards on pastures in forest-steppe areasLesser horseshoe bats (Rhinolophus hipposideros) hibernate in the caves and mine shaftsKarlštejn Castle was founded in 1348 by Karel IV as a fortress to house the Imperial crown jewelslady orchid (Orchis purpurea)