'The Allegheny Plateau is home to Pine Creek Gorge, a.k.a. the Grand Canyon of this state'
Pennsylvania
OTHER GRAND CANYONS: The Allegheny Plateau is home to Pine Creek Gorge, a.k.a. the Grand Canyon of this state
The Allegheny Plateau is home to Pine Creek Gorge, a.k.a. the Grand Canyon of this state
The Allegheny Plateau is home to Pine Creek Gorge, a.k.a. the Grand Canyon of this state
OTHER GRAND CANYONS
Pennsylvania
OTHER GRAND CANYONS