The ROCK HUNT SERIES is comprised of 18 geocaches (16 regular caches with two mystery (puzzle) caches thrown in for more fun).
This is one of the mystery (puzzle) caches.
N38 58.ABC W119 55.DEF
A Kevin Harvick
B Kasey Kahne
C Austin Dillon
D Kyle Busch minus Danica Patrick
E Brad Keselowski
F Jamie McMurray
Small pill bottle
Bring your own writing stick

You can validate your puzzle solution with certitude.