600 feet west of Dalecarlia Parkway and 300 southeast of concrete culvert, within the fenced Dalecarlia Reservoir property. Starting from Westmoreland Circle, travel south on Dalecarlia Parkway until the road crosses over a creek near Warren Place. Follow the creek west into the forest. After some time, the creek and the fence run parallel to each other. When the fence crosses over the creek, the concrete culvert is easily visible within the fenced area. Shortly before the crossover, there is a large hole in the fence. The stone is several hundred feet south of this hole, over the crest of the hill and too deep into the forest to see from outside the fenced area. Unfortunately, entering through the hole constitutes trespassing on federal property. Thankfully, it is possible to visit the stone by calling David MacGregor of the Army Corps of Engineers: (202) 764-2799. The main number of the Dalecaria Water Treatment Plant is (202) 764-2753.

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