Hello Cecilia - Ugashik Caldera is definitely the closest caldera to Becharof Lake. Here are some photos of Ugashik: https://www.avo.alaska.edu/volcanoes/volcimage.php?volcname=Ugashik-Peulik If you still want to send your photo, we'll take a crack at labeling. Thank you, Cheryl -------- Cecilia Kleinkauf wrote: 10/16/13 Hello: I jus spoke to someone at the observatory about a caldera near Becharof Lake that I would like to know more about. I would also like to send you a photo of the caldera (with Becharof Lake in the background) to see if you could help me identify it. Your employee told me over the phone that this might be the Ugashik caldera, but I don't think it is. Can you let me know how I can send you a photo to help identify this caldera? Thank You. Cecilia Kleinkauf -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050