[Geysers] White Pyramid

[marcia bettger]

We were having a discussion on another chat board about the mound beside Pyramid Geyser.  This year when visiting I so wanted to explore that area around Daisy to Black Sand and/or Biscuit but wasn't able to because of family.  What is the geological story (that we know of course of) the White Pyramid?  It is quite a visible and interesting feature.
Thank you!
Marcia
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