I did the same sort of thing, but used Giant's cone as a standard - you can barely see part of it on the left side, and after a bit of time on the cage I know about how high that point is compared with the cone as a whole. (why wouldn't you use the cone? It's the best point for gauging height because it's more directly under the high water). I copied the image into PSP and did the ol' Pixel count. I came up with a height of about 170. Given that there is likely a bit of forshortening at the top due to the lens, you could up it to 185-190 No way that's 270. Still impressive, though. Paul Strasser _____ From: geysers-bounces at wwc.edu [mailto:geysers-bounces at wwc.edu] On Behalf Of Eric Hatfield Sent: Monday, July 02, 2007 9:49 PM To: geyser observation reports Subject: [Geysers] Giant height, 6/20. I looked at the picture of Giant at the Bailey's website. Great picture. And that is really, really big! I invite others to make their own guess, but using landmarks in the photo, I think the highest jet is at least 220 ft. Using the people in the foreground as a metric is a clear underestimate, given that they are 100 ft. closer than the eruption. That gives a height around 170. Using the cone is a little too far and overestimates, but that gives a height of around 270 ft.... It looks as if there is significant wind, and that the eruption has been going on at least a little while. What were the first jets like??? Correct me if I'm wrong. Go Giant Go. -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20070703/eabf86b8/attachment.html>