Castle Geyser.
Terry Engr. Co.
First sketch ever made. [BD]
Castle Geyser Cone.
[BD] See foot note, page 168.
Crossing the river to its right bank, nearly opposite the Castle, there are found within a narrow compass three noted geysers, the Sawmill, Turban, and Grand. Of these, the last is by far the finest, and ranks among the very greatest geysers in the world. It was not seen by the Washburn Party, in 1870, but it seems to have been the first geyser to welcome to the Upper Basin the Hayden and Barlow parties in 1871. Captain Barlow says of its eruption: [BE]
"This grand fountain continued to play for several minutes. When dying down, I approached to obtain a closer view of the aperture whence had issued such a powerful stream. A sudden gush of steam drove me away, following which the water was again impelled upward and upward, far above the steam, till it seemed to have lost the controlling force of gravity, and that it would never cease to rise. The roar was like the sound of a tornado, but there was no apparent effort; a steady stream, very graceful and perfectly vertical, except as a slight breeze may have waved it to and fro. Strong and smooth, it continued to ascend like the stream from a powerful steam fire-engine. We were all lost in astonishment at the sudden and marvelous spectacle. The proportions of the fountain were perfect. The enthusiasm of the party was manifested in shouts of delight. Under the excitement of the moment, it was estimated to be from three to five hundred feet in height."
[BE] Page 25, “Reconnaissance of the Yellowstone River.”—See [Appendix E].