Horne Mt. Horne Mtn above Cathedral Grove Hiker favorite South Trail up Mt. Horne Mt. Horne Old Growth Douglas Fir Island Timberlands continues to log more off Horne Mtn. Douglas Fir of Horne Mtn This tree is even older than it looks due to the poor soil quality. Island Timberlands has flagged blocks and roads. It is just a matter of when. Loggin here may have lasting hydrological effects on Cahedral Grove below. .