An ONDA fence pull is an organized work party to remove obsolete barbed-wire fences from public lands where grazing has been retired.  Barbed-wire fences criss-cross the west, separating land into grazing allotments.  Once cattle are removed and the land will no longer be grazed, the fence is unnecessary.  In fact, it becomes a hazard to wildlife such as sage grouse and pronghorn as they migrate across the sage country.  It also is a sign of human presence on the land.  In order to return the wild to places like Steens Mountain, and to allow for safe wildlife migration, volunteers join fence pulls to take down the relic fence.

The fence is removed either by hand rolling the wire or by rolling it on a human powered "fence roller."  Once the wire is down, the posts are removed using a post-jack.  Instantly the landscape is open, free of obstacles and boundaries.