Grand Falls is a natural waterfall system located 30 miles northeast of Flagstaff, Arizona in the Painted Desert on the Navajo Nation. It is also called Chocolate Falls because of the color.
At 185 feet tall, it is taller than Niagara Falls. It dumps snow melt or seasonal rain into the Little Colorado River below. It is known for its extremely muddy flow, which is a major contributor of Little Colorado River opacity. Heavy rains or snow melt will produce spectacular viewing, photography, and sound, whereas a scarcity of water will produce only trickles or no flow at all.
Grand Falls was formed when lava from nearby Merriam Crater in the San Francisco volcanic field flowed into the Little Colorado River, creating a lava dam.
Wikipedia https://en.wikipedia.org/wiki/Grand_Falls_(Arizona)
Address 86035, United States
Coordinates 35°25'41.555" N -111°12'5.022" E