Page "Geothermal areas of Yellowstone" Paragraph 2

Signs of the forces of erosion can be seen everywhere, from runoff channels carved across the sinter in the geyser basins to the drainage created by the Firehole River.

Mountain building is evident on the drive south of Old Faithful, toward Craig Pass.

Here the Rocky Mountains reach a height of 8, 262 feet ( 2, 518 m ), dividing the country into two distinct watersheds.