(Multnomah Falls, OR) -- The extremely cold weather last week caused heavy ice to form around Multnomah Falls. The lodge remains closed, because water cascading over the pedestrian areas froze. The Historic Columbia River Highway is also closed because of snowdrifts, trees and rocks that fell onto the highway. Trails in the Gorge are covered in ice. The U.S. Forest Service says there's no estimate for when the Lodge or the Highway will reopen.