Anybody who gets to the top of Peralta Trail (Fremont Saddle) and isn't entirely spent, should do two things. First, take the extra 15 minutes and hike over to the Weavers Needle Overlook - it is very cool. Then as an alternative to returning back down Peralta, the Cave Trail return is totally worth it. It is relatively easy to follow between the worn path and cairn markers. Although it does appear that there may be numerous variations, if you pretty much stick to the Peralta side base of the big rock formations at the top of the ridge you'll be fine. Just give yourself plenty of time to explore some very interesting spots on the way down. On a saddle beyond Geronimo Cave and maybe beyond the Fortress (I don't quite recall) I found two rather well worn paths, one heading north back up toward the Barks Canyon side of the formations and another heading down to the east as if into Barks Canyon. Followed them each a ways but don't know where they end up. Have fun!