I apologise for venturing into the bike forum with useful information rather than just pontificating on the chat forum. However, if you are planning a trip to one of Spain's best mountain biking areas then you really need to know you can't ride a bike or even walk through the best bits anymore. The same happened to bits of Aragon a few years back and the policy is forcibly policed so being cheeky isn't a good idea.
Edit: you might need to refresh a couple of times to get the full text

