 |
Old Faithful
|
| Upper Geyser Basin |
|
 |
|
| Blue
Star Spring (Upper Geyser Basin) |
|
 |
Sulfarates polychromes |
| Castle
Geyser
|
|
|
|
Duke Lake |
|
|
|
|
|
Opal Pool |
Opalescent
Pool |
|
