The 18-hole "Rattlewood" course at the Rattlewood Golf Course facility in Mount Airy, Maryland features 6,501 yards of golf from the longest tees for a par of 72. The course rating is 70.4 and it has a slope rating of 125 on Rye grass. Designed by Brian T. Ault, ASGCA, the Rattlewood golf course opened in 1995.