From D.C area:
Take Rte 66 west to the Front Royal exit, route 522/340.
Follow route 522 south for about 12 or 13 miles.
Just before you get into Flint Hill, take a left on route 637 (opposite Wakefield country day school).
This begins as asphalt, but becomes a one and a half lane dirt road. Take it easy and travel 3.5 miles.
Our place on left, sign says Grunkle...street number 1846.
From Warrenton or points south:
Take either 522 North or 211 South and follow as above - except that you will travel thru Flint Hill and turn RIGHT onto Rte 637.