That volcanic action in the Crater Lake region has long since ceased may be indicated by the fact that no hot springs or fumeroles are know to exist. It is possible, however, that some may still be discovered, as many of the deeper canyons on the lower slopes of the mountain have not yet been thoroughly explored.

A recent discovery of several mineral springs in Annie Creek Canyon, by Chief Ranger Godfrey, is of importance in this respect. He states that in his experience this is the largest flow of mineral water to issue from a single spring. The walls below have been heavily stained from the fluid which is deep red in color, and which has a taste similar to that of the mineral springs in the vicinity of Ashland.

Specimen bottles have been sent to the laboratories for analysis.