4 Letter Words: From ROOT to TREE Mystery Cache

Cache is not at the posted coordinates.  Solve two simple word-ladders to get the actual coordinates.  Assume 36 59. and 121 29. 

This puzzle is a tribute to ecrane's (now archived) Four letter words: Lips.

Word ladders are a classic puzzle invented by Lewis Carroll (who called them doublets) where you must transform one word into another by changing one letter at a time, and each intermediate step must be a valid word itself, common enough to be found in a standard English dictionary.  His very first offering: turn HEAD into TAIL:

HEAD - HEAL - TEAL - TELL - TALL - TAIL  (There are four step solutions but they involve either a very-archaic English word or a non-English word)  

In 1965, Dimitri Borgmann pointed out that the ideal form of this wordplay would change an n letter word in n moves.  Of course, this often prevents the charm of changing witty pairs such as PINK into BLUE or LIVE into DEAD.

I don't claim that my little ladders are charming, but they do meet the "ideal" of n mioves, that is, three intermediate steps between the 4-letter starting word and the goal.

North:

SALE 

_ _ _ _ 

_ _ _ _ 

_ _ _ _ 

PINT 

West:

KEEL

_ _ _ _ 

_ _ _ _ 

_ _ _ _ 

HARD 

Because there may be more than one legitimate wordladder connecting a pair, consider the following clues for the necessary steps (but clues not necessarily in correct order)

part of foot, less brightly-colored, cow group, kind of tree, windowglass, listen to suggestions 

There are online solvers for word ladders, but you probably will enjoy it more if you figure out these word arrangements yourself.

Cache is a bison, not camo'd, slightly concealed at a safe roadside pullout.  

You can validate your puzzle solution with certitude.