Of Nuraghe Lugheras near Paulilatino, or the Nuraghe de S'Orcu near Domusnovas, the entrance may be protected by a regular system of courtyards and subsidiary nuraghi.
- Nuraghe of Voes (Plans and Sections).
The nuraghe in its simplest form is a circular tower about 30 ft.
The staircase leads either to a platform on the top of the nuraghe or, more frequently, to a second chamber concentric with the first, lighted by a window which faces, as a rule, in the same direction as the main doorway.
Thus, there may be a platform round the nuraghe, generally with two, three or four bastions, each often containing a chamber; or the main nuraghe may have additional chambers added to it.
- Nuraghe Aiga (Plan and Section).
Generally there is, if possible, a water-supply in the vicinity; sometimes a nuraghe guards a spring, or there may be a well in the nuraghe itself.
3.-Nuraghe Madrone, Near Silanus.
4.-Nuraghe Orolo, Near Bordighali.
The former are generally found close to, or at least in sight of, the nuraghe to which they belong.