Says J. S. Diller, of the United States Geological Survey, "With its comfortably active volcano, inviting cinder cones and lava fields, vigorously boiling hot springs, mud lakes and 'mush pots' for the vulcanologist to study, and the glaciated divides and cañons for the physiographer, in a setting of lovely scenery and attractive camps, for the tourists all easily accessible, the Lassen Peak region affords one of the most alluring and instructive spots for a National Park." XI HAWAII NATIONAL PARK A volcanic exhibit unrivaled in the world is embraced in the Hawaii National Park, which was created in 1916. This Park consists of two volcanic sections in the Hawaiian Islands, with a total area of one hundred and seventeen square miles. Within this territory are two active volcanoes, Kilauea and Mauna Loa on the island of Hawaii; and one sleeping volcano, Haleakala on the island of Maui. The celebrated and unequaled Hawaiian volcanoes are a national scenic asset, unique of their kind and famous in the world of science. Apparently, the ocean has been filled in and the entire group of Hawaiian Islands built by the lava-outpourings of volcanoes. In this National Park we may see volcanic topography in the course of construction; some landscapes just cast in the process of cooling; others that are beginning to show the erosion of the elements; also those which vegetation is just possessing. The Hawaii National Park has about the same latitude as the City of Mexico. There are about a dozen islands in the group, with a total area of seventy-five hundred square miles. Honolulu, the capital city, is on the island of Oahu, near the middle of the island chain, which extends from northwest to southeast. From San Francisco it is about twenty-one hundred miles to Honolulu. Kilauea is more than two hundred miles southeast of Honolulu, and thirty miles inland from the port of Hilo. Twenty miles to the west from Kilauea is Mauna Loa. The crater of Haleakala is on a different island from Kilauea and Mauna Loa, about midway between these and Honolulu. The active rim of Kilauea is four thousand feet above the sea. The slopes of this volcano have an exceedingly flat grade. It is the most continuously active of the three volcanoes in this Park. It has a pit in which the molten lava rises and falls and is boiling all the time. For a century Kilauea has been almost continuously active with a lake or lakes of molten lava. The crater of Kilauea is not a steep mountain-top, but a broad, forested plateau, beneath which is a lava sink three miles in diameter, surrounded by cliffs three hundred feet high. Several times during the last century the active crater was upheaved into a hill. In a little while it collapsed into a deep pit with marvelously spectacular avalanches, fiery grottos, and clouds of steam and brown dust. Through many years the crater was overflowing. Frequently large pieces of the shore fall into the molten lake, forming islands.