Lower Paleolithic research in the Czech Republic underwent a complex history, with alternating periods of enthusiasm and scepticism. Certain archaeological sites are actually rejected and some deserve a revision.
Here we discuss two promissing sites of Middle Pleistocene age (MIS 11-9, based on chronostratigraphy and faunal record) associated to the small-sized industries, predominantly made of quartz: Račinĕves and Karlštejn.