Hi RC it's a honor to hear from you, I've read a lot of your stuff since the 90's, thanks for what you have done and keep doing for your sport!
Well, cutting the b sh**t....
this is a trail in Sintra-Cascais Natural Park in Portugal one of the best trails network here in the country, and the beach that you see it's called Gincho a major surf spot in here and in Europe too...
I don't know if you've ever been in Portugal , but you are truly welcome to ride and have a beer on the beach after! cheers!
Here's the complete "burros" trail, from minute 10 to end (MondrakerP riding)
www.youtube.com/watch?v=gxNKd4ZQTsM#t=10m01s