Complex sentence: In the interior of the Nuraghe Susùne there is a tholos room that opened to the internal passage according to the transept scheme; it was provided with another trapezoidal light oriented to the west.
Split into simpler sentences: In the interior of the Nuraghe Susùne, a tholos room opens to the internal passage. According to the transept scheme, it provided another trapezoidal light oriented to the west.