 Hiking; NCT; Pennsylvania; PA-02 [20110502] |
 Emlenton; Allegheny Valley Trail; Hiking; NCT; Pennsylvania; PA-02 [20110502] |
 Ruth Bennett McDougal Dorrough; Emlenton; Allegheny Valley Trail; NCT; Pennsylvania; PA-02 [20110502] |
 Allegheny River; NCT; Pennsylvania; PA-02 [20110503] |
 Allegheny River; NCT; Pennsylvania; PA-02 [20110503] |
 Sandy Creek Tunnel; Hiking; NCT; Pennsylvania; PA-02 [20110503] |
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