The Kaukai (Obelytė) complex is on the left bank of the Peršėkė runlet. It has been dated back to the 11th century. The complex is set up of two mounds that are in two different villages, a pertinent of the castle (suburbium) and a subjacent village. The main mound was in the highland of the Perseke runlet left bank winding. The other mound, Obelytė, tree-covered and almost decayed now was on the right bank. A big territory of the pertinent of the castle had a garden and of farmstead. One can climb up the wooden steps to the Kaukai mound.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.