Introduction to Geocaching will be held 10 a.m. on Saturday, Nov. 9 at the Linnaeus Arboretum, Gustavus Adolphus College in St. Peter. GPS Geocaching is like a fun, technology-based outdoor treasure hunt. If you’ve never tried geocaching before, this is your chance. We’ll have several GPS units on-hand you can borrow and we’ll teach you how to use them. It’s a simple, fun activity by yourself or with the whole family. All ages welcome. Free for Arboretum Members. Cost is $2 per person for non-members (payable at the door). Space is limited, and registration is required by calling 507-933-6184.