Plummeting 620 feet, in two different sections, Multnomah Falls is the second highest year-round waterfall in the United States. Nearly two million visitors a year come to see this ancient waterfall. Multnomah Creek is fed by underground springs originating on Larch Mountain. The flow over the falls varies; usually its highest during winter and spring. Multnomah Falls offers one of the best places in the Columbia River Gorge National Scenic Area to study geology exposed by floods. Six flows of Grande Ronde Basalt are visible in the fall's cliff face, representing more than 400,000 years of geological history. From the information center, visitors can follow the 1.2 mile trail that climbs approximately 600 feet to the top of Multnomah Falls. This trail provides great views of the falls and the Columbia River Gorge.