All tagged Volcano

Devils Tower National Monument

In 1906, the Antiquities Act was passed giving the President of the United States the ability to declare any government land a National Monument. Three months later, Theodore Roosevelt declared Devil’s Tower the first national monument. At 1200ft tall, this volcanic scar looms over the entire region and can be seen from miles away.

Grand Falls

20,000 years ago, the volcano that produced Merriam Crater spewed lava across the Arizona desert and dammed the Little Colorado River more than five miles away. Lava filled the small canyon carved by the little river and forced it to change direction northward before returning, hundreds of feet downstream, and plummeting over the canyon wall.