
Early explorers to Yellowstone described majestic waterfalls roaring through rock chasms, rainbows shining at the base of the falls. This is the Grand Canyon of the Yellowstone, formed by lava flows, eroded by thermal forces and a mighty river, sculpted by ice from glaciers; the result is spectacular. Paintings by the artist Thomas Moran captured this wondrous scenery, making Yellowstone famous. Along the North and South Rims are overlooks and trails to explore the canyon.
Brink of the Upper Falls Trail - It's just a short distance from the parking lot down the trail to the brink of the Upper Falls. Stand on a platform and watch the roiling Yellowstone River right next to you, moments before the water plunges over the edge, 109 ft down. (There are guard rails at the overlook.)
Brink of the Lower Falls Trail - Hike down the trail (1 mile round trip, 600 ft down) to the overlook for the Lower Falls. This is an unparalleled sight, as the fall drops 308 ft, water spray making rainbows. The overlook is situated at the lip of the falls, so you really see the water going over and rushing through the canyon below. Tip: Walk the North Rim Trail (1 mile) between the Brink of the Upper Falls and Brink of the Lower Falls
Canyon views - Lookout Point, Grand View, and Inspiration Point all have stunning views of the colorful rock formations of the Grand Canyon. At Lookout Point, take the Red Rock Trail (3/4 mile round trip, 500 ft down) for close views of the Lower Falls.Canyon Village Visitor Center - Stop into the visitor center for excellent exhibits about the volcanoes and glaciers that shaped Yellowstone. Kids can find out the difference between geysers, mudpots, fumaroles (smoke vents) and hot springs, check out the huge model of the park, and watch a 20 minute overview of Yellowstone today in the theater.
Also, just north of the Mud Volcano, on the east side of the road, check out the Sulfur Cauldron - large, beautiful, definitely "stinky egg" mudpots, bubbling and blurping away.