Mine Howe is a prehistoric subterranean man-made chamber dug 20 feet deep inside a large mound. The origin of the howe (from Old Norse word haugr meaning barrow) is not perfectly understood. Experts believe that it was built roughly 2000 years ago during the Iron Age. There is some similarity to the well inside the Iron Age Broch of Gurness.
Its walls are lined with stones fitted to form an arch over the cavity and 29 steps lead to a rock floor. The entrance is at the top of the small hill and there are indications of other Iron Age and earlier activity around the site. A flight of stone steps descend to a half-landing where they turn back on themselves and a further steps descend to a chamber. This chamber is only about 1.3 metres in diameter but is over four metres high with a corbelled roof. The bottom step into this chamber is 0.9 metres high and gives it a cistern-like appearance. At the half-landing two subsidiary chambers/passages open out, one above the other. Most of the structure is lined with beautifully built dry-stone walling.
Mine Howe was first explored in 1946 and misidentified as an Iron Age broch. After the 1940s' excavations were finished, Mine Howe was covered over and left untouched and nearly forgotten for almost 50 years. Douglas Paterson, a farmer who owned the land at the time, rediscovered the site in 1999. He removed material that had filled in during the intervening years and built a small wooden entrance over the opening. He built stairs leading down into the chamber and allowed visitors inside.
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.