prehistoric necropolis in sardinia, italy

32002800 afterlife alghero ancient anghelu archaeological archeological archeology architecture area blue burial cemetery chamber chambers culture destination discending domus dromos europe european generic grave graves graveyard hill history italian italy janas landmark lesson near necropolis neolithic nobody openair ozieri plain prehistoric prehistorical quarried rockcut ruins ruju sardegna sardinia scenic several sightseeing site sky tomb tombs travel underground vegetation vestibule visiting