A local company "Andean Kingdom" (http://www.andeankingdom.com/) organizes a daily bus trips to and from the crag from Huaraz costing 25 Sols (10 USD) for each way for each person.
There is a modern hut with full kitchen and hot water located a 5min walk from the crag for 30 Sols (12USD) per night. You need to bring your own food, however beer is available at the hut.
Approach:
From La Tapia, if you look to the right you will see La Placa Verde about 50 meters up the hil
In agreement with the local community many areas of Hatun Machay have been declared “nature zones”. The aim is to preserve the ecological balance in the area whilst respecting the community’s land and cultural history.