Canyons are inherently risky. Flash floods occur without notice on sunny days. Technical skills & surrounding topography knowledge required yet does not eliminate risk.
Short & sweet technical canyon near Tortilla Flat which is a southern fork of Crucifix Canyon and has two rappels less than 100ft and a few down climbs. Reach the canyon by taking that rough road north from Mesquite Flat and then when done with the narrows, some rock hopping bring you to the southern fork of Crucifix and then shortly joins the main Crucifix canyon. Continuing down the main canyon a quarter mile or so brings you to a doable return route up the south side that tooks you up and over a saddle and continue south to hook back up with the rough road you walked in on...
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.