2024-02-122024-02-121904-01-0110.15786/13683091https://wyoscholar.uwyo.edu/handle/internal/5820https://doi.org/10.15786/13683091Close to the bridge that crosses Firehole River on the road leading to Midway and Lower Geyser Basins, and at the very edge of the water is Riverside geyser. If the geyser is not in action we would not notice it at all, unless some one would direct our attention to it, as the cone is not at all conspicuous. This geyser has two craters; one being somewhat larger and higher than the other, and both resembling a chimney in form. The eruption occurs through the lower opening and this usually surprises visitors who almost invariably expect to see the water spout from the higher crater. At intervals of about seven and one half hours, with a regularity almost equaling that of Old Faithful, this geyser plays for a period of about twenty minutes. About a half hour before an eruption the water begins to overflow, and then it shoots its great column of water about 80 feet into the air; not perpendicularly, however, but slantingly and the entire volume of water falls into Firehole River. The crowd of people which we see here is typical of the crowds that gather each afternoon during the Park season to witness the Riverside Geyser in action. The curved line of the column of water and the inconspicuousness of the cone render it somewhat different from the idea which many people have of a geyser. The carriages on the opposite bank of Firehole River are on the road that leads south to Old Faithful Inn; and a little north of the geyser the road crosses by means of a bridge, which is hidden in this view by the water and steam of the geyser, to the east bank of the river.https://creativecommons.org/licenses/by/4.0/PhotographyStereoscopicYellowstone National ParkWyomingRiverside Geyser, throwing its 80 ft. column of water into Firehole River. Yellowstone Park, U.S.A.figure