We went to this beach on a hot saturday and it could not have been better! Compared to the many overly crowded Sardinian beaches, this was a nice surprise. It is a bit hard to reach, and there isn't much around, but it is a wonderfully hardly crowded beach, and parking is easily found for free. The beach is small - around 150 meters long and there is no sand but tiny tiny grey, white and black stones (possibly the same that used to be extracted in the mine). The sea is amazingly clean, and the colors are incredible. There is a kiosk at the beach if needed. I will definitely want to go there again!