It's a modern day treasure hunt--geocaching. The goal is to find the caches hidden at a given location.
Louis Carr is an avid cacher. His son introduced him to it. Now he has more than 150 caches hidden in Marquette.
"This is a good thing for you because I like to work in my shop and make little things, and I like to get outside," said Carr.
Sarah Nelson writes: "My husband takes our children, ages 8-17, at least two times a month. It's a great way to get to know areas of the U.P. and to connect with others."
To start, join Geocaching.com, find a location, and follow the GPS coordinates to it. Caches can be hidden anywhere, even where you least expect it.
Even standing beside what seems to be an ordinary tree, but if you develop a geocaching eye, you will notice something is not quite right with it. Part of the thrill is finding these caches that are neatly blended with their surroundings.
The cache is simply a closed container where people can leave a trinket to be exchanged for another. Inside the container you will find a log to fill out, keeping track of who found the item.
"It might say it's a small container, but that small container might be in something else that looks very normal. You have to figure out what's odd here, what doesn't fit in," Carr said.
If you are interested in learning from the best locally, attend a caching event at Presque Isle on August 25.