Take the boardwalk for steam and heat, then climb to the overlook for the complete pool and branching orange runoff. Warm, breezy conditions help clear the steam. Stay on trails and boardwalks: fragile crust can break into scalding water, and off-trail walking is banned. No drones or pets on the trail; carry bear spray and stay 91 m from bears and wolves, 23 m from bison and elk.