How to get there
Leaving Cagliari, take the S.S. 131 (Carlo Felice); after 44 km, at Sanluri, take the S.S. 197 that leads you to Guspini.
The natural monument is inside the town, on the small Cuccuru Zeppara hill, in an old rock quarry.
In order to visit the Basalt Columns, you must enter a private garden.