I think this is a Western Red Cedar.
This is called the Moss Trail, so lots of ferns and moss. Most of the stuff on this log is Fern Moss.
Western Maidenhair Fern
Western Sword Fern
Lettuce Lichen growing on tree roots.
Because the soil is so poor, many young trees grow on fallen trees. Once the "nurse" tree completely decays, the roots of the trees that grew on it, still show its shape and location.