Bull Pen is a day-use only area on West Clear Creek featuring a popular swimming hole with multiple cliff jumping heights and rope swings, accessible via a steep descent from the parking area.

The site includes vault toilets and parking areas but no potable water or overnight camping; access requires driving approximately 9 miles on Forest Road 618 from Highway 179, with a bumpy dirt road that may be challenging for low-clearance vehicles.

The area also serves as a trailhead for the West Clear Creek hiking trail and offers picnicking and fishing opportunities along the creek.