This place is called Pisaq.
There was a very sacred building on the top to worship the sun. Priests lived here, plus guards, evidently people came from all over to worship here. The terraces serve a variety of purposes - growing, prevention of errosion, defense, etc. Idiot guide wasn't sure how they were defensive though. Evidently good guides are hard to get. Tourism is so huge that they do not have sufficient good guides to take all the groups. Two of the three days I had guides who were idiots. I swear I knew more about the places than they did.
Anyway you climb forever to get to this place
846 is the terraces
850 is about half way up
860 is about 3/4.
No rails on the trails. better watch your step, long way down
865 is looking down on the residential section for the guards