Castle Geyser is on a prominence opposite Geyser Hill. The mound on which it is situated covers about three acres, rising more than forty feet above the river. It has the most prominent cone in the Upper Basin, resembling an old castle. At intervals the steam escapes and throws out jets of water, though it erupts only every two days. Near Castle Geyser is Castle Spring, a beautiful pool of water, highly colored.
The Sawmill Geyser gets its name from the peculiar noise it makes during an eruption. It plays at intervals of three or four hours and at a height of about forty feet. Its indicator is near-by; they both start together and suddenly begin to throw water in all directions.
The Grand Geyser discharges water in forked columns 200 feet high. It is said to play much more frequently in the spring than in the fall. This is because the water supply is greater in the mountain regions at this season.
Turban Geyser is near the Grand. The early explorers believed that internal fires were seen in its crater; if so, it was caused, no doubt, by the light playing on bubbles of gas. Firehole Lake furnishes a good example of this phenomenon. The Turban Geyser plays about twenty-five feet high. Sometimes its eruptions occur with the Grand Geyser.
The Economic Geyser gets its name from the fact that during its eruptions nearly all the water flows back into its crater. In form it resembles Old Faithful, but plays only about fifteen feet high.
CASTLE GEYSER © Haynes, St. Paul
Beauty Spring attracts much attention. It is a large, silent pool remarkable for its coloring. Almost every person, when approaching it for the first time, remarks about its beauty, hence, our guide said, it received its name. A rusty color predominates in various shades from the richest brown, blending into green and yellow tints.
Butterfly Spring is about four feet across and has an opening in each wing. It looks like a butterfly in both color and shape. These double springs, of which I saw a number, as heretofore stated, have a spiritual significance, illustrating the two works of grace, justification and sanctification, so clearly taught in both the Old and the New Testament.