Approximate - nearest available gauge. Use as general reference only.
This solid class 4+ maybe 5 rapid has two big holes. The river left side of the 2nd big hole has an undercut that could come into play more easily at low flows. Sam's paddle (pic) is pointing to the rock slab that has water running under it as it slopes into the water. The undercut is at the bottom of the hole. If swimming, swim right and balling up though the 2nd hole could be very critical to skipping through unscathed.
Scout Crucible and Peewee at the same time.
From Elmhurst it takes 1 hour of constant paddling through mostly class 2 to get to this jewel.