The structure, situated on a ridge overlooking the Utcubamba Valley in northern Peru, is roughly 600 meters in length and 110 meters in width. It was likely built to defend against the Huari or other hostile peoples. Radiocarbon dating samples show that the structures construction started in the 6th century AD and occupied until the Early Colonial period (1532-1570).
There are kombis daily & taxis from Chachapoyas to Kuelap. Most leave from their respective stations 2 to 3 blocks from the main square. As of early 2017 the cable car from Nuevo Tingo is open (20 soles).
3 hours walk or 30 minutes driving from nearest hotels in the hamlet of Santa Maria. Most cost 20-30 Sol. Hot water is not always available but food is plentiful, cheap and tasty in that hamlet.
Ticket is 20 Sol as of Sept 2017. Make sure you purchase before ascending as you will be turned back at the entrance without one. There are guides available near the ticket office, but they are no longer a requirement for entry.