|Matt has a dream to take a photo just like this at every national park/monument we visit. So wonderfully cliche, but we just don't care.|
-more than 1,000 feet (305 m) deep in most places.
-up to 4,000 feet (1,219 m) wide.
-20 miles long.
-carved from old rhyolitic lava flows.
-thermally altered by the heat and gases from the Yellowstone Volcano.
-308 feet (94 m) high.
-twice as tall as Niagara Falls
-variable in volume of water flow from 63,500 gal/sec during peak run-off to 5,000 gal/sec in the fall.
The Upper Falls is:
-109 feet (33 m) high.
Uncle Tom's Trail) are open next time we go. They looked really, really fun (and steep!), but were closed due to snow still on our last visit.