The Wyoming Land Trust, a conservation group, has secured a land easement on one of the oldest working ranches in Sublette County.

The Circle Ranch – also known as the “67 Ranch” – has been in the Miller family for more than 130 years. The easement will prohibit building development and subdivision on almost 2-thousand acres of land, which includes elk, moose, pronghorn and sage grouse habitat.

Land Trust spokeswoman Kendall Brunette acknowledges that this easement could limit the case for adding sage grouse to the endangered species list.

Brunette says the Miller Family plans to use the money they received from selling development rights to buy more land they intend to protect.