Slide down on natural toboggan into a canyon is a very fun perspective but you have to know first where you fall down. Potholes or pools of water contains sometimes hidden material as blocks or trunks underwater. You need to probe first before slipping to know if the pothole below is sufficient deep and large to welcome you in full security. Slide down in a canyon is always optional. Do not attempt this possibility if you have fear of the height or not ready for. Also, the configuration of the canyon is evolving after each flash flood. A deep pothole of water can be full of gravel after thunderstom due to material carried away by the current. So always take care : a bad trajectory can injure you. If all is ok, have a good fun!