From: Flintstone, MD 1) Take I-68 (US-40) east to exit 62, about 8 miles 2) Turn right (south) off the exit ramp, continue 1.9 miles 3) Turn left on Fifteen-Mile Creek Rd., continue about 1 miles. 4) Staging area is on the right. Alternate Staging Directions From: Flintstone, MD 1) Take I-68 (US-40) east to exit 62, about 8 miles 2) Turn right (south) off the exit ramp, continue 6 miles 3) Turn left (east) on Mertens Ave. Two staging opportunities can be found on Mertens Ave. The first staging area is about several hundred yards in and the second one is about 1.8 miles in.