Kani basin - location of the study site (IMAGE) Hokkaido University Caption Green area highlights the Mizunami group, a geological formation of which the Kani Basin, where the study site was located, is a part. (adapted from Nishino et al., Scientific Reports, June 22, 2023) Credit Nishino et al., Scientific Reports, June 22, 2023 Usage Restrictions This image is copyrighted but may be used to report on this press release if credited as instructed. License Licensed content 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.