Joshua Tree National Park Pleistocene Epoch

As the Pleistocene Epoch drew to a close ten thousand years ago, and the rivers of glacial ice melted, people lived in an environment dramatically different from today - both cooler and wetter. Lakes and swamps existed where no water remains now. Lush grasslands covered the plains, supporting mammoths, mastodons, horses, camels, and, in some areas, bison.

Oasis of Mara Projectile points found along an extinct water channel in the Pinto Basin represent the earliest known human occupation of this area. Dated from four to eight thousand years ago, this Pinto culture was first described by amateur archeologists, William and Elizabeth Campbell in the 1930s. The Campbells believed that there had been a river flowing through Pinto Basin but more recent research by geologists dispels the notion that there was either a river or a lake in Pinto Basin by the time humans occupied the area. The points collected by the Cambells are thick and triangular in shape, with notched shoulders and a broad stem. Pinto hunters attached the points to a wooden spear shaft and used a spear thrower, or atlatl, to propel the spear. Based on the relatively large number of Pinto points-as well as cutting and scraping tools-compared with the few seed-processing implements found at these early sites, it is believed that Pinto Culture was a mobile population dependent upon large game hunting and seasonal plant gathering. The period of Pinto Culture occupation was an era of decreasing moisture, and by the end the environment was probably close to what we have today.

As the Pleistocene water sources dried up, only desert adapted plants and animals survived. The archeological evidence suggests that the human population gradually adapted as well, by hunting smaller game and processing small seeds. Little evidence links the Pinto Culture with today's tribal groups. The Cahuilla, Chemehuevi, and Serrano who followed the Pinto period had a more diversified strategy of hunting and collecting food items that included distinct changes in stone tools and increasing numbers of hard-seed milling stones.

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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.