This multi starts with Part 1, which is an informational display in the area. The answer consists of multiple words. Gather those words and work out the coordinates for the second of 2 parts, Part 2.
Part 2 Coordinates: N40 1S.TUV W76 5W.XYZ
Use the following table: A=9 B=8 C=7 D=6 E=5 F=4 G=3 H=2 I=1 J=0
S. Third word, fourth letter, minus five
T. Fourth word, eighth letter, plus three
U. Second word, seventh letter, plus six
V. Fifth word, eighth letter, plus six
W. Second word, fifth letter, plus eight
X. Third word, first letter, minus two
Y. Fourth word, eighth letter, plus one
Z. Fifth word, eighth letter, plus eight
B.Y.O.P.
PLENTY OF PARKING AVAILABLE.
No bushwhacking or getting dirty is required, unless you like that sort of thing.... It's just not required for this final location.
As always, MARK A WAYPOINT BACK TO THE CAR!! Finally, it is imperative that you place/replace the cache in the same location and position that you found it, for the best attempts at avoiding muggles' attentions.