Bull Valley Gorge to Willis Creek is a classic Grand Staircase Escalante Loop that combines two beautiful yet very different slot canyons with a bit of a cardio workout during the few miles of deep, soft desert slogging in Sheep Creek (the connector drainage between Bull Valley and Willis).  The keen observer may discover multiple rock art panels on this route - a minimum of three, and quite possibly more.  There is another piece of much more recent and more obvious history on this loop: the historic jeep in Bull Valley Gorge from a