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The Bear Pond Mountains are a sub-range in the Appalachian Mountains, that straddle Pennsylvania and Maryland in the United States. These mountains are a part of the Ridge and Valley Appalachians and reach their highest point at Cross Mountain (Pennsylvania) . A unique geologic feature known as the "Punchbowl" occurs in this range. This feature was created by the weathered shales of the Ordovician age in the center of a south-plunging anticline, having been eroded to expose a large amphitheater like feature (punchbowl). Cross and Hearthstone Mountain are made of hard resistant quartzite of the Tuscarora Formation of the Silurian age, which form the walls of the bowl. Whitetail Ski Resort is also located in this range on Two Top Mountain. The chief summits of the Bear Pond Mountains are the following: *Cross Mountain (Pennsylvania) *Hearthstone Mountain *Two Top Mountain *Kasies Knob *Fairview Mountain *Gillians Knob *Bullskin Mountain *Rickard Mountain *Powell Mountain *Sword Mountain *Abe Mills Mountain *Johnson Mountain ==References== Alan R. Geyer (1979) "''Outstanding Geologic Features of Pennsylvania''", Geological Survey of Pennsylvania * (【引用サイトリンク】 Latitude and Longitude from TopoQuest ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bear Pond Mountains」の詳細全文を読む スポンサード リンク
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