PORTLAND, Ore. (AP) — 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.