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.
Amanda Grayson was the mother of Spock. She married the Vulcan diplomat Sarek. She is introduced in the episode Journey to Babel.
The cache is a micro a little bigger than a film canister, at the Carriage Dr. trailhead.