Sandstone boulders like these are big chunks of colluvium that have slid down from ancient hilltops. They can serve as refugia for plants that might otherwise be heavily browsed by white-tailed deer.
View from the front porch of my house in Morningside, Pittsburgh, PA
View of Tidioute on the Allegheny River
Sycamore Island, a nature preserve owned and managed by the Allegheny Land Trust.
Plant fossils in the Pennsylvanian-aged Allegheny Formation, collected from a roadcut along Corridor H northwest of Moorefield, WV.
Point State Park, site of Fort Duquesne, then Fort Pitt, at the confluence of the Allegheny River and the Monongahela River to form the Ohio River.
View from Tidioute Overlook
Tionesta River at the conluence with Minister Creek, Allegheny National Forest, Warren County, Pa.
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