Upravené skalní výchozy a otázka megalitizmu v těžební oblasti Krumlovského lesa

People have always tended to link images of sacrificial stones and mysterious petroglyphs to conspicuous rocks with various recesses and grooves. In the Czech lands, however, these are mostly found in mountainous terrain, i.e., beyond prehistoric settlement areas. With its bedrock formed of granites on which sat Jurassic limestones, the Krumlovský les upland in south Moravia is an exception. The Jurassic limestones that subsequently underwent denudation were pre-served only in the form of cherts, redeposited into sediments of the Miocene sea. These cherts were always the fundamental raw material of chipped industries in the wide surroundings and kept being intensely extracted since the Mesolithic to the Hallstatt Age. The exploitation culminated in the Early Bronze Age, when top parts of two neighbouring small crests were removed by extraction and thrown back again later. Particularly since that era the motives for extraction were more likely social and religious than practical. Conspicuous rocks and groups of boulders,