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  2. Tytoona Cave - Wikipedia

    en.wikipedia.org/wiki/Tytoona_Cave

    The cave and 6.8 acres (28,000 m 2) encompassing the sinkhole and cave entrance are owned by a private conservancy organization.This organization is composed of volunteers who monitor the condition of the cave, remove garbage and graffiti, conduct research, and work with the police to deter people from gathering at the cave to drink, use drugs, vandalize, etc.

  3. List of Native American archaeological sites on the National ...

    en.wikipedia.org/wiki/List_of_Native_American...

    This is a list of Native American archaeological sites on the National Register of Historic Places in Pennsylvania.. Historic sites in the United States qualify to be listed on the National Register of Historic Places by passing one or more of four different criteria; Criterion D permits the inclusion of proven and potential archaeological sites. [1]

  4. Indian Caverns - Wikipedia

    en.wikipedia.org/wiki/Indian_Caverns

    Concrete teepee in front of the cave. Indian Caverns was a show cave in Spruce Creek, Pennsylvania, United States from 1929-2017. It is a horizontal karst cave of Ordovician Nealmont/Benner limestone, estimated to be about 500,000 years old. It is the second-largest cave in Pennsylvania and the largest limestone cave.

  5. Category:Caves of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Category:Caves_of_Pennsylvania

    Pages in category "Caves of Pennsylvania" The following 9 pages are in this category, out of 9 total. This list may not reflect recent changes. C. Coudersport Ice Mine;

  6. List of caves in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_caves_in_the...

    Bat Cave; Carter Caves State Park; Cascade Caverns; Colossal Cavern; Diamond Caverns; Eleven Jones Cave; Fisher Ridge Cave System; Glover's Cave; Goochland Cave; Great Onyx Cave; Great Saltpetre Cave; Horse Cave also known as "Hidden River Cave" Lost River Cave; Mammoth Cave; Martin Ridge Cave System; Oligo-Nunk Cave System

  7. Brush Mountain (Blair County, Pennsylvania) - Wikipedia

    en.wikipedia.org/wiki/Brush_Mountain_(Blair...

    Brush Mountain is a stratigraphic ridge in the Appalachian Mountains of central Pennsylvania, United States, lying east of the Allegheny Front and west of Tussey Mountain.It runs along the southeast side of the Little Juniata River and forms a horseshoe around Sinking Run, and is the westernmost ridge in its section of the Ridge-and-valley Appalachians.

  8. Port Kennedy Bone Cave - Wikipedia

    en.wikipedia.org/wiki/Port_Kennedy_Bone_Cave

    The Port Kennedy Bone Cave is a limestone cave in the Port Kennedy section of Valley Forge National Historical Park, Pennsylvania, USA. [1] The Bone Cave "contained one of the most important middle Pleistocene ( Irvingtonian , approximately 750,000 years ago) fossil deposits in North America".

  9. Meadowcroft Rockshelter - Wikipedia

    en.wikipedia.org/wiki/Meadowcroft_Rockshelter

    The Meadowcroft Rockshelter is an archaeological site which is located near Avella in Jefferson Township, Pennsylvania. [4] The site is a rock shelter in a bluff overlooking Cross Creek (a tributary of the Ohio River), and contains evidence that the area may have been continually inhabited for more than 19,000 years.