Hi Behnaz - Unfortunately, the people who can best help with this question are out in the field or on much-deserved vacation. I'll forward your request to them for when they return. You might also ask Angie Diefenbach, with the USGS at CVO/VDAP. Thanks, cheryl -------- Behnaz Hosseini wrote: I am a volunteer with the Cascades Volcano Observatory (CVO) in Vancouver, WA and I am currently working on a few figures for a paper in review. I have been searching for pre-eruption DEMs/hillshades of Redoubt and Augustine to use as basemaps for two of the figures but have had no luck. Is there any chance you would be able to share the GIS files with me or point me in the right direction? Thank you! -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050