The cache is not at the posted coordinates, though they start you off at an excellent spot to fuel up both yourself and your wheels before heading out to make the grab.
Salute a modern day Caesar just for fun, and then ponder Lucius Verus, the 17th Roman Emperor. He's the key.
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You can check your answers for this puzzle on GeoChecker.com.
Congrats to vicdell and Roadster97 for the joint FTF!