Access easement question

Your client owns a tract that is out in the boonies that is 300 feet wide by 1000 feet deep.  His goal is to have 10 metes and bounds tracts created with each tract stacked atop the next like 10 identical books stacked.  Tract 1 has a county road adjacent to it.  Tracts 2 through 10 have no access to a road.  Thus, an existing path is to be followed as an access easement to get to Tracts 2-10.  The path is not straight.  It snakes its way across all lots and ends 30 feet from the backside of Tract 10.

You are to create all ten tracts and write a description for a uniform width access easement.  Where does the easement description end?  At the end of the existing lane?  At the boundary line common to Tracts 9 and 10?  Or at the backline of Tract 10?  Or at some point inside Tract 10 where the client points to?  No cul-de-sac.  Just a dirt/gravel path.  Most properties will have no permanent structures as there are strip pits on both sides of the existing lane.  Someone might put in a fishing shack somewhere.