Evelyn and I visited a regional forest on our last trip. It was to the east of Arecibo…need to look up the name. The thing I noticed was that they allow / have mountain biking trails. Once we have our bikes down there, we’re going to give them a try. I’ll keep you posted. (One other thing was that the park was pretty busy, so if you are looking for silence, this probably isn’t a good place–lots of people with picnics & beer.)