I believe that the old Texaco is off of the 60 however the last time I was out that way you had to take an exit to get to the Texaco it's no longer on the 60 (construction go figure). I believe it's the same exit for the 79 you just head north and jogg down the old road to the Texaco. To get to the road leading to Box Canyon is about 14 miles down 79. Turn left imediately after the Railroad tracks. I believe the road is called E Price Rd. Then it's dirt roads out to Box Canyon.