From the few lines I read in the promotion of the book, they talk about stone circles, nuraghe (ancient observation towers of pre-Roman age present only in Sardinia), etc. The Italian web site is not as comprehensive as Amazon is, so you cannot read sections of the book. The translation of the title is: "Map of the energy vortices of Italy". Here is the link
http://www.ilgiardinodeilibri.it/libri/__mappa_dei_vortici_energetici_d_italia.phpIt also discusses the invisible beings which help us with energy. The author has written other three books about energy, one of them on the Philippino healer Alex Orbito.
