This is a newer (~2010) trailhead on BLM land out of Crooked River Ranch
It starts off flat and boring but quickly reaches the edge of the canyon.
It drops slightly to the loop junction.
Then it's down down down.
The trail reaches the river and follows along the banks for about 3/4 mile.
There is a bit of a rock scramble around this contraption.
Climbing back out. Steep pea gravel, whee.
I recommend following the loop in the direction the sign recommends. It's steep both ways but this way will have you coming up the steepest pea gravel rather than down.