Krummholz
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Krummholz — also called knieholz — is a type of stunted, deformed vegetation encountered in the subarctic and subalpine tree line landscapes, shaped by continual exposure to fierce, freezing winds. Un
Krummholz Pinus albicaulis in Wenatchee National Forest in north-central Washington, United States
Wind-sculpted krummholz trees, Ona Beach, Oregon, United States
Picea engelmannii flag tree in Colorado, at the tree line
Banner tree, Torres del Paine National Park, Chile
Allegheny Front
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The Allegheny Front is the major southeast- or east-facing escarpment in the Allegheny Mountains in southern Pennsylvania, western Maryland, eastern West Virginia, and western Virginia. The Allegheny
Dans Mountain, part of the Allegheny Front in Maryland
This profile of the Allegheny Portage Railroad crossing the Allegheny Front gives perspective on how the front formed the final barrier range preventing easy settlement of the colonial and post-Revolutionary-War West (today's Midwest). Note the upland nature of the western side of the front, the Allegheny Plateau.
Red Creek west of the crest of the Allegheny Front in the Dolly Sods area of West Virginia; the creek originates along the Eastern Continental Divide, with its waters flowing to the Gulf of Mexico as part of the Ohio River watershed.
Seneca Creek, incised into the Allegheny Front west of Seneca Rocks, West Virginia. This short but steep creek originates along the Eastern Continental Divide; its waters flow into the Atlantic Ocean via the Potomac River and Chesapeake Bay.