18/22 A rocky spur runs due south from the Elburz into the desert for a distance of some twenty or thirty miles, breaking the line of communication, and seeming at first sight to obstruct it completely. This, however, is not the case absolutely. The spur itself is penetrable by two passes, one where it joins the Elburz, which is the more difficult of the two, and another, further to the south, which is easier. |