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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Attached is the best photo of Bear Den Geyser that I could
find in my collection. I took the photo in October of 1986. I spent
a lot of time at Norris between 1985 and 1987. Bear Den was a hard enough
geyser to catch erupting, let alone photograph! Intervals during these
years varied from 90 minutes to 12+ hours and were truly all over the
map. Disturbances didn’t seem to affect it in the mid
1980’s. I saw some eruptions that would have only 1-2 bursts from
it (these would last about 15 seconds) and then there would be others that
would have 30+ bursts (these would last about 8 minutes) and reach 40-50
feet. I am not sure when it went completely dormant, but it was dead by
1994.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>MK</span></font></p>
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