Conservation groups plan court action to modify a timber sale on national forest land outside Crater Lake National Park.
The groups formally notified the U.S. Forest Service on Wednesday that they will go to court unless it agrees to changes in the DBug timber sale on the Umpqua National Forest. The sale is designed to reduce fire danger and deal with pine beetle infestations around the popular recreation areas of Diamond Lake and Lemolo.
When the sale was first offered in 2009, it became a test of the Obama administration's commitment to forest protection.
Though the Forest Service dropped some elements, the conservation groups say logging still threatens old growth forest that is important habitat for protected species.
The Forest Service said it does not comment on pending litigation.