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| | Pennsylvania State Parks - Joseph E. Ibberson - PA DCNR |
 | | The common tree species of Joseph E. Ibberson Conservation Area are red, fl, scarlet and chestnut oak, white, Virginia, and table mountain pine, tulip popular, eastern hemlock, fl gum, basswood, fl walnut, fl locust, wild fl cherry, fl birch, red maple, sassafras, American beech and hickories. |
 | | The conservation area is in the Ridge and Valley Province of the Appalachian Mountains, which is characterized by long parallel mountain ridges and wide, flat valleys. |
 | | The Appalachian Mountains were once very tall, but 220 million years of erosion have worn away the tops of the mountains, leaving behind wide, flat valleys and short, steep mountains of hard rock. |
| www.dcnr.state.pa.us /stateparks/parks/josepheibberson_wildlife.aspx (409 words) |
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