It's not a typical Saturday for Linda Bluem.

"Climbing over trees and bushes, the trails, you're getting off the trail sometimes and finding things that are sometimes challenging to get to," she said.

But, when a cache awaits, Bluem says she's willing to trek through the woods, climb a hill, even pass through tunnels to find that hidden site.

"It's very rewarding when you find them, very rewarding to open that box and see what's inside," she said.

With the help of a local instructor, Bluem went Geocaching for the first time on Saturday. Now, she's says she's hooked on a hobby expert, Claire Foltz calls a GPS adventure game.

"We like to say it's a big boys treasure hunt," Foltz said.

The hunt begins simply. Foltz says all you need is coordinates, a hand-held GPS and the willingness to explore.

"You look on the computer to get your coordinates and then you can go all over the world and track things down," she said.

Those things are called caches and can be anything from a simple log book to a larger case or canister.

"There are coins and travel buddies that you'll find inside, we call them travel buddies because you can take them and move them from cache to cache," Foltz said.

But, for most it's not the reward inside that's important, it's the fun of getting there.

"It's very motivating, Geocaching is," Bluem said. "To get out and get some exercise, this is Wisconsin and this really gets you out into the Wisconsin woods."

And for those searching for more, Foltz says the sport stretches far beyond Wisconsin, you'll find caches throughout the world.

"There's all kinds of different sites, you can do all cemeteries, you can do all waterfalls, there's just so many ways to do it and have fun," she said.

So get out and explore, adventure awaits.