Silver Cord Cascade
Silver Cord Cascade is a horsetail type waterfall on Surface Creek, a tributary of the Yellowstone River in Yellowstone National Park. Surface Creek flows out of Ribbon Lake off the South rim of the Grand Canyon of the Yellowstone and plunges to the Yellowstone River. It is considered the tallest waterfall in Yellowstone.
Summit Lake Park
Summit Lake is a tarn which sits at 12,836 feet (3,912 m) altitude in a glacial cirque on the north face of Mount Evans and the east face of Mount Spalding. To the north, there is a col (12,855 feet/3918 m altitude) looking down into the chain of two cirques holding the Chicago Lakes at the headwaters of Chicago Creek. By one count that includes several unnamed lakes, Summit Lake is the 13th highest lake in the United States. In 1915, the USGS reported that Summit Lake was the highest lake in Colorado, at 12,740 feet. Later secondary sources occasionally report it as the highest lake in the United States.