...y, the one west of it the Strasburg or main valley. The Blue Ridge has many passes through it called gaps, the principal ones and those which have good wagon roads, are Snicker's Ashby's, Manassas, Chester , Thoroughfare, Swift Run, Brown's, Rock-fish, and two or three others from the latter one up to Lynchburg. Many have macadamized roads through them, and, indeed, are not gaps, but small valleys thr...