Cache is NOT at the coordinates. Instead you will find a remembrance of Karuba. Visit the location to solve for the final coordinates.
Assme N16° 51.ABC W88° 17.DEF
A = Damasasi
B = Da-Sheppa
C = (Dionicio Casimiro - Tia Baby)
D = Second digit in the number of children Karuba had.
E = (Ako + Musaya)
F = (DaMagana - DaDaTuga)

You can validate your puzzle solution with certitude.