The Hideaway is a pair of limestone (what else?) walls located several hundred feet above the canyon floor on the north side of the canyon. The area has a deserved reputation for a long approach (by American Fork standards) and difficult routes for hard men and women.
However, there are a surprising number of moderates in the 5.10 range for we soft-bodied climbers.
The area consists of two walls, one south-east facing, the other west-facing. As such, shade is available for much of the day in the warmer months (and supposedly, winter climbing is pleasant on sunny days).
Click here for an oblique, aerial view of the walls.
Note that there are many lines newer than the Ruckman guidebook. Some, but not all, of these appear in Darren Knezek's A Climber's Guide to Select Walls in American Fork Canyon from several years ago. As usual, complete information can always be obtained from Mountainworks in Provo.
Drive past the National Monument parking area and, just after the river crosses under the road from right to left, look for a large turnout on the left side of the road with utility lines running parallel to the road. Here you can see a Google Street-view photo of the turnout.
Park here and head west along the north side of the river under the utility lines.
After a minute or two, you'll pass Beer Can Alley on the right (north), a west-facing area of brown limestone. Continue onward a short distance and the trail will come upon and travel over a section of large, exposed pipe running parallel to the trail. Approximately 25 paces beyond the pipe turn north (uphill) and head up a narrow talus spill that is blocked by a large, fallen tree (you can see the tree here ).
Follow the fairly well-developed trail uphill to the walls. Plan on approximately 25-35 minutes from the parking.