RICHLAND -- The third annual Geocoin Challenge is set for June 22-24.
The event begins with a catered barbeque, followed by a weekend of 30 cache challenges (10 in each city) centered along the 23-mile Sacajawea Heritage River Trail.
The event concludes with a pancake breakfast and "Cache in, Trash Out" event June 24.
The specially designed collector coin is only complete when all three pieces are found and interlocked to form one coin.
Kayak rentals and guides for accessing island caches in the Columbia River also are planned.
For more information, including instructions and a weekend schedule of events, go to www.richlandparksandrec.com.