The mound beside Pyramid Geyser is known as White Pyramid Geyser Cone according to Lee Whittlesey's "Wonderland Nomenclature". Other names that have been used are "Snow White Pyramid", "White Cone", and "White Pyramid Throne". The mound was formed by a hot spring or geyser that is no longer active, although in cold weather some steam can be seen emerging from the remnant of the vent. Geologist Arnold Hague noted "...it must have been a geyser for a long time, but never one of the first magnitude... there is nothing to suggest impulsive, violent eruption nor the building up of an outlying mound. The White Pyramid may have ceased to play owing to the lack of sufficient pressure to force the water to the top of the exceptionally high cone. The true explanation, however, is more likely to be found in the breaking out of new geysers not far distant." Ralph Taylor _____ From: geysers-bounces at lists.wallawalla.edu [mailto:geysers-bounces at lists.wallawalla.edu] On Behalf Of marcia bettger Sent: Friday, August 21, 2009 8:43 AM To: geysers at lists.wallawalla.edu Subject: [Geysers] White Pyramid 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20090822/6ff215f7/attachment.html>