National Park in Oregon and the Rio Grande National Park in New Mexico. A bill was introduced in the last congress providing for the creation of the Grand Canyon National Park. The Grand Canyon now has the status of a national monument in a forest reserve. The creation of the following national parks has been advocated, but no bills have been introduced providing for them: The Kilauea National Park around the volcano of Kilauea in Hawaii and the Estes National Park in Colorado.
The secretary of the interior is also charged with the supervision of seventeen national monuments created by executive proclamation under authority of the act of congress approved June 8, 1906. This act authorizes
the President "in his discretion, to declare by public proclamation historic landmarks, historic and prehistoric structures, and other objects of historic or scientific interest that are situated upon the lands owned or controlled by the government of the United States to be national monuments." The national monuments under the supervision of the secretary of the interior are as follows: the Devils Tower, a landmark in Wyoming; Montezuma Castle, Tumacacori, Chaco Canyon and Gran Quivira in New Mexico, and Navajo in Arizona—prehistoric or Spanish ruins; Muir Woods in California—a beautiful redwood grove presented to the government by William Kent; El Morro in New Mexico—a rock containing inscriptions made by the early Spanish explorers; Pinnacles in California—a group of spire-like formations