The coordinates will take you to a metal sign on a black metal post.
This is where you will get your information for the 2nd, and final stage.
Yes it's a two stage multi.
For the final you will find the answers to several questions.
Final can be found at N42 14.ABC W090 16.DEF
A. The number of letters in the 5th word of the 1st line.
B. The number of letters in the last word of the 2nd line.
C. The number of letters in the last word of the 1st line.
D. The last number of either year on the sign.
E. The number of words in the 2nd line plus the number of screws holding the sign.
F. The number of words in the 3rd line.