Hello Andy, Thanks for the request. AVO does not really hold the rights to that photo. In other publications, it has been cited as "Yuri Demyanchuk, Director of the Levinson-Lessing Kamchatkan Volcanological Station at Klyuchi (Institute of Volcanology and Seismology) and Engineer for the Kamchatkan Branch of Geophysical Surveys" and "Yuri Demyanchuk, IVS, and provided by Olga Girina, KVERT" You may get more concrete permission from Dr. Girina, E-mail: girina@kscnet.ru Tel.: +74152202044 or from Yuri himself, demyanchuk.yu@yandex.ru (More info: http://www.kscnet.ru/ivs/lkamv/) An excellent photo, good luck! We are publishing a paper on volcanic eruption plumes and saw image 13216 captured by Yuri Demyanchuk on your website at this link: https://www.avo.alaska.edu/images/image.php?id=13216 We would very much like to include this photograph in our paper The paper is to be published in Phil Trans Royal Society London later this year. Would this be possible ? We can give appropriate credit to the photographer as well as the AVO many thanks best wishes andy woods Prof AW Woods University of Cambridge