Book excerpt: "Different beliefs, practices and rituals behind the notion of their magical powers and virtues are revealed. The situations in which people resorted to them are also examined: selecting chieftains, establishing the truth, curing sickness, and promoting fertility. In conclusion, the role of sacred stones in the religious and spiritual life of modern Ireland is described. This is a reminder of our spiritual past as some of these stones and monuments enter their fifth millennium."--Jacket.