• Self-guided geocaching will last all day, 8 a.m. to 4 p.m. New geocaches can be downloaded at www.geocaching.com. The first 10 people to retrieve all five geocaches will win an N.C. Arboretum travel bag and souvenir. 

• A Family Geocaching Adventure, 10-11:30 a.m. and 2-3:30 p.m., will include a guided exploration of Arboretum trails as families and children learn to use a GPS unit and seek out geocaches. Equipment provided.  

• Geocaching for Educators and Group Leaders, 1-2 p.m., will introduce concepts and techniques for leading groups of youth in geocaching adventures. Teachers, scout leaders, parents and grandparents might be especially interested.

• A make-and-take station will allow participants to make their own geocaching trade items. 

Free, though regular parking fees apply. $12 personal vehicles; $50 commercial vehicles; $100 buses. Jonathan Marchal, This email address is being protected from spambots. You need JavaScript enabled to view it..