The hunt is on.

Optima Batteries, one of the partners of Drivers Inc.’s Tanner Foust, has just launched a very unusual contest: a geocaching treasure hunt in the middle of the desert, especially for race enthusiasts.

Organized around Ultra 4 Racing’s King of the Hammers in Johnson Valley, CA, from Feb. 1 to 3., the Hammer Hunt includes some pretty significant cash prizes and other awards. As Optima explains on

“Hammer Hunt is powered by OPTIMA Batteries. OPTIMA is excited to give King of the Hammers’ attendees the opportunity to explore KOH’s iconic race locations and beautiful views of Johnson Valley. The hunt will keep you and your family entertained while giving everyone the opportunity to win cool prizes! The Hammer Hunt is a geocaching treasure hunt using Instagram posts to qualify participants for cash and prize drawings!”

And Tanner is helping to make it happen. As he posted on his own Instagram account: