The interpretive fire trail on the way to Landslide Lake goes through an area sacred to the local natives. Several such areas can be found throughout the west country and are marked by clothing attached to trees.
Forgive me, but I cannot remember the reason right now and I can't find it.*
It always gives me pause to find one of these areas. It makes the earth seem that much more alive.
*ETA: The fabric is an offering to the spirits.