- Merrill Lake Wildlife Area Unit (wdfw.wa.gov)
The Merrill Lake Unit is bordered by Merrill Lake to the south and the Kalama River to the north. A waterfall on the Kalama River is a popular site for hikers. The unit includes old-growth forest located primarily on an ancient lava flow — tree casts can be found in the lava flow — and also has a large stand of lodgepole pine, a unique feature. The Merrill Lake Unit is primarily managed for elk and black-tailed deer habitat.