Le Creux ès Faies is a Neolithic (3500 - 2000 BC), 8.5m long passage grave covered by a low mound. Two large capstones cover a rounded chamber but the passage capstones have long since gone. The mound on the north east side has been damaged and repaired though the first and last of the surrounding peristalith stones maybe in situ. Finds included human and animal bones, Beaker pottery and barbed and tanged arrowheads.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.