The Thames Valley Trail stretches for 110 km from its southern terminus on Southdel Drive at the Elgin Trail north terminus, to its northern terminus in St. Marys at the Avon Trail west terminus. This series of caches follows the off-road trail portions of the Thames Valley Trail (TVT) and are named for various fictional characters of the Star Trek universe.
Balok was a grotesque, blue-skinned humanoid with a frightening face who threatened to destroy the Enterprise for trespassing, and was fooled by the Corbomite Maneuver.
The cache is a micro attached to a fence post.