Born in 1999 as artistic Museum that enhances the Obsidian, glassy rock which in Sardinia lies exclusively on the Monte Arci. Artistic works are Mehrdad Piras, the first and most acclaimed sculptor of obsidian, and other made by brothers Abraham of Oristano. Are under construction the archaeological section, with the exhibition of finds of excavations started in Pau. and the section for the permanent exhibition of minerals.
Visiting the Museum is completed by the historic route, which leads to the summits of the Monte Arci, along which is located the oldest Obsidian deposit around the Mediterra