|Vegetation habitats||Blue oak woodland|
|Ownership||Protected in 1976 by Save Mount Diablo and transferred to Mount Diablo State Park|
Save Mount Diablo made its first direct acquisition in 1976, the “Corner Piece” — 117 acres at the corner of Morgan Territory and Marsh Creek Roads, which was then four miles from the State Park. It was purchased from the Morgan Territory Investment Company and is located just north of the Mercury Mine. Shortly after the purchase, the State Park protected North Peak which allowed the creation of Olympia Trail to Mt. Olympia. There is an unmarked trailhead to Olympia Trail at the “Corner Piece” but the trail to Mt. Olympia is very steep and narrow. The more accessible Perkins Canyon trailhead is just a short distance down Morgan Territory Road.