Abstract
The quarry at the Chlum Hill near Srbsko village disclosed during the first half of 20th century a series of underground spaces including the second largest cave system in the Bohemian Karst of that time. Since the beginning, simultaneously with the speleological exploration a particular attention was paid to the deposits yielding fossil bones collected subsequently by diverse collectors, namely the vertical cavities denoted as "Caverns no. 1 to 8".
The present paper provides a critical survey of these investigations including those from last two years which essentially refine the current knowledge of the topic. A revision of fossil materials and lithostratigraphic setting of particular localities revealed three distinct stages of Quaternary deposition: (i) the Late Pleistocene stage (probably the Eemian and Early Vistulian) - site Chlum 5=7, (ii) the Early Pleistocene (Q1) stage - sites Chlum 6 and 8, and (iii) a complicated complex of surface and underground deposits covering two or three glacial cycles around the Q2/Q3 boundary (MIS 19-15) denoted here as Chlum 4 s. l. (incl.
Chlum 1 to 4 and a series of surface exposures). The extensive sedimentary complex of Chlum 4 covers the SW slopes of the hill filling both the erosion cliff of the 80 m high terrace of Berounka River and multiple subsurface cavities connected to it.
Further investigation of that complex, both speleological and paleontological, is in progress.