The Waterworks of Yellowstone

You definitely have to put some effort in to reach it, but Colonnade Falls on the Bechler River is definitely worth that effort!

The two falls were named in 1885, and while there's no record as to why, speculation by Yellowstone National Park historian Lee Whittlesey is that "it probably referred either to the nearby columnar basalt layers or to the fact that there were two waterfalls. A colonnade is a series or row of columns placed at regular intervals."

The upper fall measures 35 feet top to bottom, while the lower falls is 67 feet tall.