Obsidian Deposit in Zayukovo (Baksan) (image) AKSON Russian Science Communication Association Share Print E-Mail Caption A - obsidian in rocks formed during the eruption; B, C - obsidian boulders ("bombs"), differing in color and shape. Credit Ekaterina V. Doronicheva et al. / Journal of Archaeological Science: Reports 2018 Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.