192. Big Knob / 193. Little Knob / 194. East Waterford Narrows

TOWNSHIP: Jackson
QUADRANGLE: Blain
LOCATION: Three miles southeast of the village of East Waterford and PA Route 75; within the Tuscarora State Forest on Kansas Valley Road.

REMARKS: The hard, resistant Tuscarora quartzite (Silurian age) underlies Big Knob and forms the high peak; the site affords an excellent view of the Folded Appalachian Mountains. Little Knob (193) is a similar feature nearby. East Waterford Narrows (194) through Tuscarora Mountain is created by the erosion of Horse Valley Run.

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238. Juniata River Overlook

TOWNSHIP: Howe
QUADRANGLE: Duncannon
LOCATION: An overlook along U.S. Routes 322 and 22 about 7 miles north of Amity Hall.

REMARKS: The Juniata River is extremely picturesque at this location as it meanders through a valley of red shales and siltstones of the Catskill Formation (Late Devonian age) and olive-gray siltstones of the Trimmers Rock Formation (Late Devonian age).
Hickory Ridge to the south is underlain by the Montibello Sandstone Member of the Mahantango Formation (Middle Devonian age), a much more weather resistant rock; hence the high ridge.
A wide floodplain on the south bank of the river, produced by the buildup of sands and gravels on the inner shore of the meander, is a favorite site for summer cottages. Even though repeated floods have destroyed these homes, old and new residents continue to build and rebuild.

REFERENCE: Dyson, J. L. [1963], Geology and mineral resources of the northern half of the New Bloomfield quadrangle, Pennsylvania Geological Survey, 4th ser., Atlas 137ab, 63 p.

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