This geocache is found at the Wanapum Dam Overlook, just off Highway 243 on the hillside above Wanapum Dam. The site offers plenty of parking, a vault toilet, shelter and great views of Wanapum Dam and Sentinel Gap on the Columbia River.
This geocache is part of the Foundation for Water Energy & Education's Hydrocache Challenge:
While in the area, visit the free Grant PUD Visitors Center near Wanapum Dam. http://grantpud.org/community/grant-pud-visitors-center
Ybbx sbe gur fvtaf.