Ousdale Broch is an Iron Age broch located near the small settlement of Ousdale. It has an external diameter of around 16 metres. The main entrance is on the southwest and is 4.3 metres long with nearly all the roofing lintels still in position. The entrance passage is 1.78 metres high and 75 centimetres wide. The entrance passage contains two sets of door-checks, and there is also a guard-cell. The interior of the broch has a diameter of around 7 metres, and there is a doorway to the intra-mural stairway.
The site was excavated in 1891 by James Mackay, and the interior was thoroughly cleared out. Layers of ashes and charcoal were found on the floor, with many broken animal bones. There were also large quantities of common periwinkle and limpet shells, and many wild hazel nuts. A series of stone tanks were set into the floor. Finds included a metalworking crucible. Stone artifacts included a damaged 'hatchet', a granite mortar, several querns, stone discs, and several whetstones. There were large quantities of pottery. A segment of a jet bracelet was also found, and a fragment of a wooden dish or scoop.
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.