 Turn onto Tuckers Lane from John Marshall Highway and go under I-66 to the parking area on your right.Linden sits astride the Warren and Fauquier county lines, SR 55 (the John Marshall Highway) and Interstate Highway 66.At above sea level, it sits at the top of the Manassas Gap in the Blue Ridge Mountains making it a gateway into the Shenandoah Valley today, as it was for early settlers in the area.