Klaipėdos universitetas

Characteristics of Andean huacas are summarized with examples from Urubamba, Machu Picchu, Llactapata, and Chankillo. We identify the pillars on the ridge above the town of Urubamba as a marker of June solstice sunrise to be viewed from the Palace of Huayna Capac. Both ends of the sightline connecting the pillars and the Palace appear to have been huacas. The large carved Intiwatana stone in the Urubamba canyon symbolically ties together Machu Picchu and the nearby ceremonial center of Llactapata. The astronomically complex site of Chankillo includes evidence for ceremonial observations of the solstices and shamanic ritual, set within a large-scale geometry established by June solstice sunset/December solstice sunrise.

The Nuraghic well of Santa Cristina, Sardinia has been regarded as a ritual monument built to receive moonlight on its water mirror at the time of the meridian passage of the moon when it reaches its highest point in the sky during and around the major northern lunistice. In this paper we investigate the precision that could have been achieved and conclude that the well could indeed have served as an instrument for measuring the lunar declination during half of the draconic cycle of 18.61 years.