La chabola de la Hechicera (Sorginaren Txabola, 'The Witch's Hut') is a dolmen group located in Elvillar. Three large vertical stones support a large horizontal flat stone. Nine large stones form a chamber in a polygonal shape. The corridor is made of five stones, and is divided into two. The site was probably a funerary construction to hold the remains of the people in the settlement.
It was discovered in 1935 by Álvaro de Gortázar in a fair state of preservation. Jose Miguel Barandiaran explored it partially in 1936, finding two stone percutors, a polished axe of ophite, fragments of pottery and human remains. The stone lying on top was found broken into three parts, but it was restored and replaced in its original position. The findings are preserved in a museum in nearby Laguardia, Álava.
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.