Receiving 12 to 14 feet of rain per year, the Hoh Rainforest is one of the best examples of temperate rainforest in the world. Fallen, moss-covered trees, grazing Roosevelt elk, and the milky Hoh River all intertwine to create an ecosystem that breathes life into your visit. From the Visitor Center, three easy loop trails provide a primer on life in the Hoh Rainforest, and for the more ambitious backpacker, the 18.2 mile Hoh River Trail climbs 4,400 feet up Mount Olympus (7,979 ft) to its source at Blue Glacier.