Blue Mountain
Blue Mountain, in eastern Pennsylvania, is a 150 mile (240km) long ridge forms an eastern edge of the Appalachian Mountains. - AsNotedIn
Blue Mountain, in eastern Pennsylvania, is a 150 mile (240km) long ridge forms an eastern edge of the Appalachian Mountains. - AsNotedIn
| Physiographic | Type | AsNotedIn |
|---|---|---|
| Lehigh Gap | Water Gap |
| Physiography | |
|---|---|
| Physiographic feature | Mountain |
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