A group of Oregon conservation organizations allege old-growth trees are illegally being logged near Yoncalla in Douglas County, about 50 miles south of Eugene. …The organizations previously sued to try to block the sale, alleging it violated federal environmental laws. That lawsuit is in process and the sale has gone forward for now, but the conservationists now believe they’ve found evidence the sale included federally protected trees. According to the plaintiffs, volunteers documented trees over 40 inches in diameter and older than 170 years being logged in the area. …The BLM’s analysis concluded the oldest trees were only 140 years old, but conservationists say that analysis is wrong. The plan calls for logging 2,400 acres over eight years, with sales beginning in 2024. …Cascadia Wildlands claims some of the trees set for logging are 600 years old, according to reporting by Oregon Public Broadcasting.