You can follow a marked trail to the summit of this 4,200m peak located in Cajas National Park. If the weather conditions are good, you should be able to see Cuenca and a great number of lakes.
When heading to Cajas from Cuenca, pass the National Park entrance. Continue to the first parking lot on the second or third curve on the way up. You can leave your car there. Continue on the way up from there until the next curve and you should see the beginning of the route.
The National Park advises the route is difficult and takes 6 hours. A normal time should be more like 3 to 4 hours. However, usually I complete it in under 2.
You are meant to go all the way to the Toreadora visitors centre, sign the visitors book and let them know what you are up to before you start the route. No one seems to check if you dont.
http://parque-nacional-cajas.org/maps/avilahuayco.pdf - Topographic hiking maps of Cajas