Silex Spring again

Mud pots

Mud Pot

Fumarole

Fumarole

A geyser

Boiling water

Another colorful spring

Elk!

Midway Geyser basin from a distance

Firehole river

Firehole river

Spring leading to river

Excelsior Geyser

Excelsior geyser

Excelsior geyser

Excelsior Geyser

Bacteria