It had to have been Olive Dell Nudist Ranch. Lots and lots of hiking trails. Glen Eden, of which we are members, has a "trail" but it pales in comparison to ODNR's trails.
For even better trails ... look up DeAnza Springs Nude Resort in Jacumba, CA, about an hour + east of San Diego! Lots more trails there and hiking in a National Park adjacent to the resort!http://deanzasprings.com/
<img src="http://www.traveltalkonline.com/forums/images/graemlins/Cheers.gif" alt="" />