Aftershock wall is part of the Island in the Sky formation. It faces west and receives afternoon sun. This 450 foot tall area may be the best climbing in the Snow Canyon State Park. A few of the routes here are longer mixed climbs, with initial pitches that can be done as sport climbs if you are not heading to the top. Living On the Edge (10c) and Aftershock (11b) are the premier routes here.
From the park entrance, drive down the main road passing the 'West Canyon day use area' on the right and going to the Pioneer Names trail on the right. This is well marked and has a pullout just there. The large wall to the right is your destination. Spot a small cave and a very large arch on the wall. Take the trail towards the cave (where the late-1800's settling Pioneers painted in their names with greasepaint), then continue south just past a large arch to a few obvious chalked lines.
Around Boulder, CO