--------------------------------------------------------------- The following message was sent to you via AVO Web Email System: --------------------------------------------------------------- Name: Jon Boyd Email Address: jrboyd@mail.pima.edu Subject: Effect of walking on wet ash Message: To Whom it may concern, I a adjunct faculty with the archaeology dept. a Pima Community College in Tucson AZ, and have been doing research on the 3.6 mya tracks left in tuff at Laetoli, Tanzania. I have been in contact with Chris Waythomas about how walking walking in wet ash might affect how humans walk in a group (his observation from Kasatochi in 2008 was no). Specifically, would it force them to walk in each other's footsteps for ease of travel, similar to what happens with deep snow? I am looking to determine whether wet ash might have been an environmental factor in how the Laetoli tracks were formed (now made by at least three individuals walking in direct register) or if some other behavior such as long distance foraging could be the cause. If you or any of your colleagues have more observations along those lines, it would be great to hear them. Also, is there an existing ash bed somewhere in AK (hopefully not TOO remote) that might be used for current observation of group movement? Thanks and Regards, --Jon Boyd Pima Community College Archaeology Centre Backup personal email: jonrboyd@aol.com ---------------------------------------------------------------- REMOTE IP ADDRESS: 127.0.0.1 USER AGENT/BROWSER: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 REFERRING PAGE: http://www.avo.alaska.edu/contact.php