Currently free to play but you must book a tee time first. Visit mullenrock.squarespace.com or text/call Matt Mullen at (703) 772- 8244. Always evolving 20 hole course with a few shared baskets currently. The course is a tight, technical one with lots of unique terrain. Many large boulders, rocky formations and a small ravine. Together they create lots of elevation changes, some blind tee shots and potential for some scary death putts in spots.