Accurately carved by a strange quirk of nature, Pulpit Rock towers high above the Gallatin Valley. Formations of this kind are not too unusual, and result when a core of hard rock is surrounded by softer material.
Yellowstone-bound, a Park motor coach starts up the Gallatin Valley with Castle Rock in the background. The comfortable buses have roll-back tops that permit full views of the surrounding rocky walls.
Riverside Geyser is an irregular performer that sends its plume-like jet diagonally out over the Firehole River. Higher up, the Firehole is a good fishing stream, but here its waters are strongly charged with minerals from the geysers and hot springs.
A bus load of visitors has stopped for a look at Old Faithful shooting its mighty column skyward.
