|Start:||December 1996 ||Observed|
|Fumarolic or hydrothermal activity: ||
|Eruption Type:||Not an eruption.|
From Richter and others (1998): During the summer of 1996, a "helicopter pilot observed an active mud spring low on the north flank of the cone [see fig. 3 in original text] and probably activity from the summit area near the present fissure vent (Fritz Wohlwend, Trans-Alaska Helicopters, Inc., personal communication 1997). This activity was never reported publicly, but fortuitously, we flew with this pilot on our first visit to the mud volcano on 21 July 1997."