Hello Wayne - If there is an intrusion of magma, it is not at the surface, and is instead somewhere underneath the edifice of Iliamna. We are not able to be more precise at this time. Thank you for your kind words and your interest! -Cheryl Cameron -------- Wayne Carroll wrote: What does the reference to "at depth" mean in your description of the "intrusion of magma"? Your website is very informative and your efforts don't go un-noticed! Regards, Wayne Carroll - Nikiski -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050