In the Heart of Zion. While Lower Refrigerator's main feature is two nice rappels, there is also a bit of sporty downclimbing at the start. Less-confident chimney-downers might want a belay for this part. Some discretion might be a good idea when leaving the Angel's Landing trail, to avoid being followed by ambitious, but equipment-less hikers off the trail.
The place faces east and south. If you are looking for warmth, head there in the morning. If seeking not-warmth, try the late afternoon. The raps are in the center of the watercourse, so if you can see water flowing from the road or trail, it is probably not a good day to do this canyon. Webbing will need to be replaced regularly, so be sure to bring some.