This cache is NOT at the posted coordinates!
A simple substitution code using the digits on a telephone number pad (see image below). Each number is equal to one of a small group of numbers that may spell out a word. Usually, the numbers 1 and 0 are used as spaces between words.
66 666 777 8 44 8 44 777 33 33 8 9 666 8 44
777 33 33 66 444 66 33 9999 33 777 666 33
444 4 44 8 7777 444 99 1 9 33 7777 8 666 66
33 666 66 33 333 666 88 777 8 9 666 7777 444
99 7777 444 99 333 666 88 777 9999 33 777 666
You can validate your puzzle solution with certitude.