WRITTEN BY ONE OF OUR PILOTS WHO IS ALSO A FAST JET INSTRUCTOR
The Ogwen Valley forms a 1-way system for fast jet traffic moving from the northern plain (Denbigh to Bala) to Anglesey and is regularly used in the week.
The usual crossing point for paragliders is near Zip World, which is exactly where the fast jets need to climb to 2500ft to establish comms regarding possible traffic in the Menai Straits.
The valley is also extensively used by our fling-wing brethren so there is normally quite a bit of traffic. It is not prohibited to fly there but the entire area forms part of the AIAA (Area of Intense Aerial Activity).
If you gather more than 5 paragliders and file a CANP, we will avoid the area of your launch but obviously cannot predict any xc route you may choose to follow thereafter.