striking formation gives them their characteristic names.
Mystic Falls is on Little Firehole River some distance to the west and rather difficult to find.
A half mile after leaving Biscuit Basin, at the right and below the road, is the Artemisia Geyser, which has a beautiful crater and throws a tremendous volume of water when in action.
Upper Geyser Basin
A mile and a half south of Biscuit Basin, at the base of a small hill, the road branches again. The road on the right should be taken as on it is Morning Glory Spring, whose beautiful shape and color make it an object of universal admiration. At this point we enter that far-famed Upper Geyser Basin, where the largest and finest geysers of the world are gathered together in a small space only a mile north and south by a half mile or less wide.
The Fan Geyser is on the right between the road and the river. The Mortar is a few feet farther up the river. At their best these
