** Cache is not at the posted coordinates **
...you will, however, have to visit them to get the clues to lead you to the final.
To find the final stage of this cache, locate the Fieks at the posted coordinates. From there, fill in the blanks in the coordinates below:
N 44° 05.abc W 092° 32.def
a = number of letters in Mr. Fiek's first name
b = first digit in Mr. Fiek's birth date
c = the # month in which Mr. Fiek died
d = third digit in Mrs. Fiek's birth year, then plus one
e = first digit in Mrs. Fiek's birth date
f = second digit in Mrs. Fiek's birth year
You can validate your puzzle solution with certitude.