Megalithomaniac Hugh Newman explores the Santa Cristina Nuragic complex that includes the famous rock-cut holy well. The Nuragi megalithic tower is one of 7,000 recorded in Sardinia and is surrounded by a stone built village dating to around 1,300 BC. The Holy Well has precision engineered stones and is much more sophisticated than the village, similar in style to ancient Peru and Egypt. The well is oriented so that sunlight shines upon the water on the equinoxes, and moonlight shines upon the water at the maximum declination of the moon, which occurs every 18.6 years. The local Santa Cristina church was built nearby in the 1200s and that's why it got that name! Includes exclusive aerial footage.