Dekkas Rock Day Use Area is a free, year-round picnic area located on Gilman Road about 11-12 miles east of I-5, offering 5 picnic tables and access to the 1-mile Hirz Bay Trail for hiking.

The nearby Hirz Bay public boat ramp provides access for both motorized and non-motorized boats on the McCloud Arm of Lake Shasta, though note that parking is available but water and restroom facilities are not at the day-use area itself.