Mammoth Cave National Park Cave / Karst Systems

The Longest Cave:

The total surveyed extent of Mammoth Cave currently stands at 580 kilometers (360 miles) with potential for a 1600 kilometer (1000 mile) system. In addition, there are more than 200 caves within the park which are disconnected fragments of the larger system or associated with local drainage features. The geology and geography of the area has resulted in a variety of karst basins, which have become the most thoroughly understood conduit flow aquifer in the world.

Karst Landscapes:

These regions are characterized by rapid subsurface drainage through limestone and cave systems, account for approximately 20% of the Earth's land surface, 25% of the continental United States and 45% of the area east of the Mississippi River. Approximately 40% of the U.S. population relies upon karst aquifers for drinking water.

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November's Featured Park
The North Cascades have long been known as the North American Alps. Characterized by rugged beauty, this steep mountain range is filled with jagged peaks, deep valleys, cascading waterfalls and glaciers. North Cascades National Park Service Complex contains the heart of this mountainous region in three park units which are all managed as one and include North Cascades National Park, Ross Lake and Lake Chelan National Recreation Areas.
November's Animal
Badgers are animals of open country. Their oval burrows (ten inches across and four to six inches high) are familiar features of grasslands on sandy or loamy soils of the eastern plains or shrub country in mountain parks or western valleys.