i'll look at my old maps if i can find them but the easiest directions
go east from hals crossing about 10 miles until you come to cal black airport
the trail is the dirt road some 75 yards to the west of the airport entrance.
follow that trail on the main route for about 5 miles across the flat barren terrain and then you will come to the "fort". at this point the trail starts..you drop down off the fort (an old rock wall built by someone (the crazy guys that built the trail perhaps) the trail drops into the small canyon) then hang a right and you are on the trail.....
its been a few years but it is not too hard to find...there are several other entrances, but this is the easiest because of the airport.