Nice crag. Routes are generally short and explosive. Good variety of grades. There are some multipitch climbs as well.
During Summer it gets very hot during the day. Going there after 6:30 pm is more pleasant. However, even in Summer, it can get windy and cold, so take your jackets!
New guidebook (2020): Rocha Nai - Guia de Escalada de Galicia. (Only in Spanish).
Work in progress. (Old) Guidebook available as a free download here http://www.scribd.com/doc/37294308/GALICIA-VERTICAL-Guia-de-Escalada
Some bouldering topos here http://ovosdegneis.wordpress.com/descargas/ ('Xeral' is the sectors location map)
Park in Merendeiro do Galineiro (Picnic Area) (Coordinates: 42.14252º N, 8.71251º W). The Peak of the montain where the climbing are a is located is visible from the parking area.
Approach to the crag takes around 10-15 min.