Canyons are inherently risky. Flash floods occur without notice on sunny days. Technical skills & surrounding topography knowledge required yet does not eliminate risk.
A canyon cut through the red and white sandstone north of Bridge Mountain, Ice Cube Canyon boasts many beautiful rappels and stunning views. Depending on water flow and time of year, there are sections of mandatory wading and/or swimming through ice-crusted potholes and rappelling along flowing waterfalls. In mid-summer, there are still some mandatory swims (including swimming disconnects), but the potholes provide cool relief when the air temperature is 100+.
This canyon could be divided into three "sections": The upper technical section, the middle boulder-hopping section, and the lower technical section. Between the upper and middle sections, there are a couple spots where you can eject or drop in - useful in case of time constraints, injury, etc. The upper section passes through the narrow slot of upper Ice Cube and is quite scenic with sinuous rappels through the watercourse. The middle section consists of rock-hopping and hiking in the wash, and can be quite hot. The lower section is a long series of rappels as views of the valley open up, culminating in a 190 foot rappel from a narrow crack to the valley floor.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.