Together and with Pisan support, the brothers invaded Cagliari in March 1164, reconquering the city, and then Arborea in April, where they holed up Barisone in his castle of Cabras.
Ilhéu das Cabras - an island chain located a few kilometres north of São Tomé Island in São Tomé and Príncipe
Under the Giudicato of Arborea it had a some importance as the court of the giudice (duke) was held in its castle.
The highway is known as the Rodovia Dr. Heitor Penteado in its entire length and begins near Campinas and runs through Sousas and ends in Cabras.
Most of the artifacts can be found in the Archaeological Museum at Cagliari, in the Antiquarium Arborense, the Archaeological Museum of the town of Cabras and in the British Museum, London.
The judge of Arborea took refuge in the castle of Cabras.