I thank David for all the info he's been posting, but I must enter a correction here. That spring with the railing, down the trail from North Goggles toward Liberty Pool, is "Rubber Pool" [name, to me, first heard from Clark Murray]. It is NOT Frog Pool. That term in the plural should be applied only to the group of (now) cool springs that lie between Liberty and "Rubber Pool," as shown below in the following quote from Whittlesey's "Wonderland Nomenclature...". FROG POOLS---See East Frog Pool, West Frog Pool. The Frog Pools were named in 1959 by park geologist George Marler for the fact that frogs inhabited these cool springs prior to the 1959 earthquake. Following that quake the springs heated up and killed the frogs. The springs are in the Grand Group of Upper Geyser Basin--"three springs lying to the east of Liberty Pool."_[1]_ (aoldb://mail/write/template.htm#_ftn1) The middle spring is known also as Dark Algal Pond. In the above, please note the word "three" and the relationship to Liberty Pool. "Rubber Pool" is NOT one of the collective Frog Pools. With all that, I had never previously heard the name of "Frog Geyser" applied to my UNNG-CGG-6. Not that it is a bad name, but I do not feet that it is applicable since its physical position is not among the Frog Pools. Scott Bryan ---------------- In a message dated 2/16/2012 12:24:51 P.M. US Mountain Standard Time, david.schwarz at alumni.duke.edu writes: Anyway, "Frog Pool" is the first name I heard for the large pool with a railing between Liberty Pool and Lion (I've also heard "Rubber Pool"). "Frog Geyser" is the feature across the boardwalk from it, a smaller pool with an oblong vent. The eruptions I saw consisted of heavy boiling and minor splashing over the vent, with very murky water. -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20120216/b746d9c4/attachment.html>