Other geysers that the visitor may well see are Grand and Beehive, both in the Upper Geyser Basin. Grand plays for about an hour at intervals of from one to four days and throws a column of steaming water smoothly to a height of two hundred feet. Of all the geysers, Beehive perhaps approaches nearest to artistic perfection. From a small, beehive-like mount it sends up a slender column of water vertically and symmetrically two hundred feet. Yellowstone Lake lies at an altitude of 7741 feet above sea-level. Its area is about one hundred and thirty-nine square miles, and its irregular shore-line has a length of one hundred miles. In places the lake is three hundred feet deep. There are thirty-six other lakes, of which Shoshone, Heart, and Lewis are the largest. Each has its own peculiar and delightful wilderness boundary and beauty. There is a close network of streams, of which one hundred and sixty-five have names. Among the more important are Yellowstone, Lamar, Snake, Gardiner, and Firehole Rivers. There are numerous waterfalls and cascades. The extensive water-flow abundantly supplies the headwaters of the Missouri, Yellowstone, and Snake Rivers. In Two Ocean Pass, among other places, is a lakelet upon the very summit of the Continental Divide whose waters flow to both the Atlantic and the Pacific. The altitude here is 8150 feet, and the lakelet completes a continuous waterway of nearly six thousand miles from coast to coast. A map that I carried showed Two Ocean Pond on the Continental Divide to the west of the Thumb. There is a Two Ocean Pond on the Divide at that place as well as one to the south of the lake. But my map did not show that the Divide was horseshoe-shaped, and it located the pond on the wrong arm of this horseshoe. Consequently I had a long search before I found the pond, and much confusion with the topography and watersheds after I had discovered it. One day in 1891 I had the good fortune to come upon General Hiram M. Chittenden. He was directing the cutting of trees at a place that has since become famous as Lake View, from which, perhaps, the best view of Yellowstone Lake is to be had. General Chittenden spent many years in the Park and developed its existing scenic road system. He was the first to propose that the excess of elk and other game in this and other parks be distributed over the country at cost. What is the greatest feature in this wonderland whose history began at a camp-fire? The Lower Falls thrilled me more than any other waterfall I ever have seen. The Yellowstone Cañon may be called the greatest attraction in this Park. But to me the supreme attraction is the petrified forests. 4. AGES OF FIRE AND ICE