Is is just me or what. Apparently we aren't even supposed to mention the backcountry of Yellowstone, but look at this item http://volcanoes.usgs.gov/volcanoes/yellowstone/geo_hist_sinter_age.html, and I guess we have to assume that it is OK to do so if you are a USGS or NPS employee. Nice photo of sinter at a spring complex at Shoshone. Scott Bryan -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20160122/15d49287/attachment.html>