El Nacimiento
			Description. This very scenic tour is a great introduction to biking or hiking in the Potrero, and takes in two of its most interesting sights: the Spring and the Ancient Oak Tree. Begin in the canyon and take the dirt road south into the Potrero proper. About 200m after passing the Spires the road will fork - take the right fork which climbs out of the gravelly stream bed. Follow this main road uphill past cottages and ranchos. The road climbs steadily a ways, then drops slightly into a salt flats area. Stay on the main road which veers left and crosses an arroyo (stream bed). Do not take a right either before or after the arroyo but continue straight, up and down another hill. Fork right here, following the larger road, and climb another long, tiring hill. At the top, pass a driveway on the left, then fork left, then right, neither climbing nor descending. Cross a running stream at a badly eroded section (Caution! large drop on left). Keep right at the next two forks, but do not cross the stream. Finally, where the road begins to climb steeply, cut right onto a small trail near a sign in a tree, and go downhill to the stream. Follow the stream uphill a very short distance, then leave your bike on the gravel bar, cross the stream, and follow the trail for 1 minute uphill to the wonderful waterfall and bathing pool. The water here is cool but not cold, and the same temperature year-round. Take a refreshing bath. The spring itself is a 5 minute hike uphill, you may follow the stream there if you like, then return to your bikes via a road on the east (right) bank of the stream. Returning, see if you can ride your bike out of the gravel bar and onto the road. Go left on the road, but do not enter the eroded section: rather, fork right and downhill, and immediately fork right again. El Encino Gordo, the ancient oak tree, will be on your left across a flat, open area. Admire it for a while. Now you can either return the way you came (faster and easier), or, follow the old road north and east from the tree. This road descends steeply, sporting some mildly technical, rocky sections. Eventually you will exit in the main arroyo, and follow its gravelly washes back into the canyon. What a nice way to spend a rest day!