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.
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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.