NWG, when I started MTBing and went with friends to a park rated "easy to intermediate" single track, I couldn't believe what they considered "easy". It was hard to me and still had roots, rocks, climbs/descents, and switchbacks. Sheesh. Then of course the "easy" trails hooked into intermediate ones, so you could easily end up on a more difficult trail without realizing it unless you turned around and went back the way you came in. I fell quite a few times, had bruises and scrapes, and I also bailed out frequently and walked as I got so terrified. I always said that there was a fine line between exiliaration and terror while MTBing!
My worst fall was when the end of my handlebar clipped a tree (just not paying good enough attention as it was on an easy, straight section of the trail). The handlebar whipped around so fast, and I fell hard on my side and hit my head HARD. Had bad whiplash on the side of my neck that lasted a long time. After that was when I stopped going to that park and moved over to a different trail that was double-track and not technical, just challenging aerobically with a lot of climbing. Felt a lot more comfortable there!
Be super careful out there -- it would indeed be terrible to take a bad fall when by yourself, especially if there's no cell signal. In fact, I wouldn't do it alone if there were no cell signal.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow