Groovy Adventures : National State Parks Directory : National Monuments : Nebraska

Links:

  • Agate Fossil Beds National Monument - Located along the banks of the Niobrara River in Northwestern Nebraska, Agate Fossil Beds and its surrounding prairie are preserved in a 2,270 acre National Monument. Once part of "Captain" James H. Cook's Agate Springs Ranch, the nearby beds are an important source for 19.2 million year-old Miocene epoch mammal fossils.