When I was in Sardinia I was lucky enough to visit this necropolis thanks to some friends who knew the place, an archaeological site very probably little known in the world. In my opinion, for those who want to visit Sardinia it is worth a visit because they will be amazed in front of this wonder.
*This complex is made up of various agglomerations and this includes about 27 tombs that are communicating with each other through tunnels, are datable to the Neolithic age approximately, the tombs are easily accessible except those higher up and you have to descend them from above through some ropes.
Unfortunately, some of these tombs are not in a good situation precisely because over time they have been worn out, if no interventions are made, they will surely have a bad end.*
They are located in the municipality of Sorradile in the province of Oristano and are practically free access except that you have to be a little careful Especially if you have children in tow.
That time was truly a touching experience for me because they are unfortunately a bit mystical and undervalued places in Sardinia, in fact I remember that to get there I also found a field where there was tall grass and it was difficult to get there, anyway if you use the satellite navigator you can not go wrong they are poorly marked but also the people of the area can help you, but it is worth visiting them!
I hope I have been helpful with this information because Sardinia also has these places to visit which are historical but which may not be advertised as much.