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.
Sargon was the disembodied leader of a race of powerful aliens in the Star Trek episode Return to Tomorrow.
The cache is a micro in a tree next to the trail.