Big Creek drops about a hundred and twenty-five feet through a basalt gorge in the Gifford Pinchot National Forest, then runs another short stretch to its mouth on the Lewis River. The forest here is the wet kind of Pacific Northwest woods, west of the crest of the Cascades, where Douglas fir and western hemlock stand wrapped in moss and the understory is sword fern and devil's club. Access is off Forest Road 90, a short walk on the Big Creek Falls Trail to the railed overlook above the plunge pool. The water carries the cold of upper Skamania County all summer. After the first frost the vine maple turns the gorge orange against the dark fir.