The stone precinct has an irregular shape as the ramparts are following the ground configuration. On the southern side two towers were built close to the main access road, one of them was also the main gate tower. For a while, another (postern-like) entrance to the fortress was used on the north-east side of the fortress.
Beside the military purpose, the other tower built close to the main road was probably also used as the residence of the chieftain. This structure had a limestone block ground floor (built in the so called murus dacicus technique) while the upper floor constructed of mud bricks; the roof was made of tiles.
The rampart in some section of the precinct (built in murus dacicus technique) has only one limestone block parament and the usual filling (emplecton) while the transversal wooden beams are using the bedrock as a second parament in which their extremity is fixed. Another peculiarity of the Căpâlna rampart are a few animal figures scratched on some of the ancient limestone blocks.
The excessive rainwater was drained out from the fortress through a limestone channel passing by the dwelling tower and also thorough the enclosing rampart.
On the highest spot on the plateau probably a timber watch tower was built.
The construction of the fortress started in the middle of the Ist century BC and it most probably ended during the Roman wars.
Somewhere near by the enclosing rampart, probably on the terraces from the south east side of the hill, rectangular temples must have existed in ancient times. Reused plinths (stone foundations for wooden columns), with two different sizes, were found in the rampart’s structure.
Civilian constructions/ facilities
As far as we can tell the archaeological complex of Căpâlna was more like a high status residence and also a military stronghold. No traces of „civilian” settlements outside the ramparts were found yet.