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Caldera (20)
SkyF Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2234 W: 188 N: 1912] (8073)
Again sorry for the quality, but equipment and handling took a toll on the picures ;-).

After eruptions ended, a crater lake formed in the 1991 caldera, with the 1992 lava dome forming an island. At first, the lake was small, hot and highly acidic, with a minimum pH of 2 and a temperature of about 40C. Abundant rainfall cooled and diluted the lake, lowering the temperature to 26C and raising the pH to 5.5 by 2003.

The lake increased in depth by about 1 metre per month on average, until September 2001, when fears that the walls of the crater might be unstable prompted the Philippine government to order a controlled draining of the lake. 9,000 people were once again evacuated from surrounding areas in case a large flood was accidentally triggered. Workers cut a 5 m notch in the crater rim, and successfully drained about a quarter of the lake's volume.

this picture was taken before 2001.

No points please!

Altered Image #1

SkyF Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2234 W: 188 N: 1912] (8073)
still smoking
Edited by:SkyF Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2234 W: 188 N: 1912] (8073)

some hot spots still smoking