In 1866, Charles Goodnight and his partner Oliver Loving began rounding up feral cattle in Texas, forming herds to be driven north into the immense unoccupied grazing land in northeastern New Mexico. The counties of Colfax, Mora, Harding, Union, and San Miguel became the location of some of the great historic ranches of the West. From the 11,000-acre Chase Ranch in Colfax County to the 650,000-acre Bell Ranch in San Miguel County, these ranches have been home to several generations of ranching families. Pioneer ranchers such as Manley M. Chase, Frank and Charles Springer, Samuel Watrous, and Albert K. Mitchell established a tradition of perseverance, self-sufficiency, and sustainable range management that continues to the present day.