Don't miss this if you walk around machu picchu. The stone is aligned with magnetic compass points. This is totally unnecessary and unrelated to primitive agriculture which is the traditional story. Any farmer can see where the sun rises and sets so why would you need a precisely calibrated compass?
If the story matches the science, it will be a most remarkable feat. How did the Incas acquire the knowledge, establish the correct data, then chisel the rock to perfection ?
This is the only thing like it in all of Peru. I really don't think they know what it is for, but listen to the stories and make up your own.
The Inca were also scientists, this stone was used to tell the dates of the summer and winter solstices, like a sun-dial. Just incredible they were able to have this knowledge and use it. Machu Picchu really is a spiritual place, and to be here is a dream come true.
you might have to search this attraction out or ask where it is, but you dont need a guide to find it. once you are there you will find that there are lots of people who will tell the story and hiistory of the stone.
The Incan were amazing people and their intelligence should never be missed. This stones name means, "Hitching post of the sun" and for good reason. It is a precise indicator of the date of the two equinoxes and other significant celestial periods.
It's very impressive how the Inca were so knowledgeable in archaeology and complex construction. Their ability to use astronomy to determine planting/harvesting seasons as they monitored the path of the sun was amazing. Very impressive to see structures such as this and to imagine life during that period.
This is also one of the must sees at Machu Picchu. The rock has a very special shape and must have been an important 'instrument' in the Inca astronomy.