[Geysers] River Group August 25

[TSBryan at aol.com]

I made a quick trip into the River Group and Pocket Basin Mud Pots this  
morning.
 
UNNG-RVG-4 is active, though its intervals are long -- greater than 2 hours  
-- and it might do little more than overflow.
 
Pocket Basin Geyser appears to be dormant. It is undergoing its  
intermittent, bubbling overflows, but the higher formations were bone dry and  the 
adjacent spring never stopped vigorous bubbling.
 
Just south of the largest pool in the south area is a small geyser. I saw  
one interval (start to start) of about 14 1/2 minutes and one timed duration of  
4m 26s. Some of the splashes reached 4 feet high although most were less than 
2  feet high. Nearby was another geyser, erupting from a fracture within an  
extensive bacterial flat; it had durations and intervals of around 30 seconds  
and a height of maybe 6 inches.
 
Armored Spring was undergoing intermittent boiling along the edge near its  
outlet.
 
"Dark Pool" gave me one interval of 30 minutes. Both eruptions lasted  around 
30 seconds. The first eruption consisted of little more than vigorous  
boiling, but the second eruption included several bursts about 4 feet  high.
 
Brain Geyser is active, though I have no interval. Near it was a little  
spouter that could be called "Tiny" if that name wasn't already in use. The  
splashing was up to about 2 inches high and constant, but the water level varied  
from well below overflow to (for its size) heavy overflow. The vent is about 1  
inch across within a tiny, beaded cone.
 
The mud pots are hardly worth a visit. I cannot remember ever before seeing  
the mud cone areas (Microcosm Basin) entirely dry -- lots of hissing but no  
fluid mud anywhere. Up above, a couple of the bigger mud pots are active but  
nothing was spectacular. The pot at the far north, which sometimes acts as the  
"vertically gifted mud geyser" was all but dry.
 
Scott Bryan
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