Corner tower C is on the eastern side of the bastion of Su Nuraxi (15th-13th century B.C.), in a side position (fig. 1).
The perimeter tower (fig. 2) can be accessed from the courtyard, through an architraved door and a corridor 5.20/5.40 metres long and 0.82/1.53 metres wide, originally comprising two chambers one on top of the other, the upper one, with a silo, could be reached from the fortifications of the bastion walls. The base diameter and the vault height are 4.90 x 8.40 metres.
Inside the chamber, to the left, there is a round cell covered by a vault (2.60/1.80 metres in diameter and 3.86 metres in height), preceded by a low architrave hatch of 1.07 metres height. It is presumed it was used as a bed or to store arms.
The lower chamber wall had a double row of embrasures that also act to provide light and air; the upper row originally had a wooden walkway that could be accessed from a mobile staircase. When the bastion wall was redone, between the 12th and the 10th centuries B.C., all the embrasures were closed up (fig. 3).
- LILLIU G., Il nuraghe di Barumini e la stratigrafia nuragica, in Studi Sardi, XII-XIII (1952-1954), Sassari 1955.
- LILLIU G., I nuraghi. Torri preistoriche della Sardegna, Verona 1962, pp. 181-191.
- LILLIU G., ZUCCA R., Su Nuraxi di Barumini, Sardegna archeologica, Guide e Itinerari, Sassari 1988.
MURRU G., Barumini. Su Nuraxi e il villaggio nuragico, Fondazione Barumini Sistema Cultura, 2007.
- SANTONI V., Il nuraghe Su Nuraxi di Barumini, Guide e Studi, Quartu Sant’Elena 2001.
- USAI L., Il nuraghe Su Nuraxi, Barumini, in CAMPUS F., LEONELLI V. (a cura di), Simbolo di un simbolo: i modelli di nuraghe, Monteriggioni 2013, pp. 324-329.