(Brian Maffly | Salt Lake Tribune). Zion National Park maintains these two outhouses for "emergency" use at Scout Lookout, a popular destination on the West Rim Trail where intrepid hikers head to Angels Landing. Maintaining these toilets, whose stench mars an otherwise breathtaking experience, is an expensive, unpleasant chore for park staff. This week, park managers closed the trail for two mornings while helicopters ferried out 32 barrels of human waste.