Kiki, Adam and Robert at Multnomah Falls Kiki, Adam and Robert against the background of Multnomah Falls in Autumn. Multnomah Falls is the second highest year-round waterfall in the United States. Located in Oregon along I-84, about 35 miles east of Portland, the water of the falls drops 620 feet from its origin on Larch Mountain (part of the Cascade Mountain range).

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