Ancient Douglas fir trees in Cathedral Grove, Pseudotsuga menziesii
Ancient Douglas fir trees in Cathedral Grove. Cathedral Grove is home to huge, ancient, old-growth Douglas fir trees. About 300 years ago a fire killed most of the trees in this grove, but a small number of trees survived and were the originators of what is now Cathedral Grove. Western redcedar trees grow in adundance in the understory below the taller Douglas fir trees.