An Inca trail traverses the hillside, arrives at a small pass, then heads up and over a rocky summit to the sun temple. At the pass, four purification baths flow with water brought down from a lake at 4,500 meters. On the other side of the pass to the left, a 10-minute detour around the corner reveals Inca buttresses, which were once spanned by a hanging bridge made of plant fibers.
The main path crosses through a military wall with a perfect trapezoidal door, known as the Door of the Serpent. Above is the second residential area, Hanam P’isaq (upper Pisac). The path now climbs up steep staircases and niches carved out of the rock itself, alongside a cliff and through the Q’alla Q’asa (Split Rock) tunnel. Faced with a vertical rock face, Inca engineers decided to enlarge a rock fissure and bore through the entire cliff—how they did this, with no iron or steel implements, remains a mystery.
The best view of the Intihuatana, which means “sun calendar” in Quechua, is from above. Like the sun temple at Machu Picchu, the Intihuatana is an oval building of perfect masonry encasing a votive rock. The pillar atop the rock was used to track the sun’s movements, and, fascinatingly, the sun rises precisely above one peak to the east on June 21 and another on December 21. The walls of five other temples surround the temple, including one that was probably devoted to the moon. To the right is a series of restored baths that flow into an underground canal. In front of the Intihuatana is a sacred chacana (Inca cross).
Off the easier trail back to the main entrance of the ruins is P’isaqa, the third and finest residential area, with its own ritual bath. These were probably homes for the elite, as opposed to the military garrisons closer to the pass. Most people head back at this point to the main entrance, though there are two trails from here that make a pleasant two-hour walk back to Pisac. One descends directly to the Río Quitamayo, with spectacular views, while the other drops through the lookout towers of Coriwayrachina and an area of steep terracing. Both trails merge on the other side of the river for the final descent into town.
There are several ways to see the Pisac ruins (7am-3pm, admission only with boleto turístico), but the most popular is to take a US$8 taxi up the eight-kilometer highway to the main entrance. Allow for 1.5 to two hours to see the ruins and another two hours to walk downhill all the way to town (or take a taxi back for a further US$8).
Excerpted from the Second Edition of Moon Machu Picchu.