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. 2021 Jun 23;595(7867):399–403. doi: 10.1038/s41586-021-03675-0

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 2 — a, Plan of cave interior, showing location of each chamber. Red lines denote stratigraphic profiles sampled in 2017. Grid coordinates for the excavation squares are shown along the top and left side of the plan, and the corresponding squares (each consisting of a Cyrillic letter and a number) are shown at the top of the stratigraphic profiles in Fig. 1a–c, Extended Data Figs. 3a, b, 5, 8, 9, Supplementary Figs. 1, 2, 3b, d. b, Southeast profile of Main Chamber after excavations in 2016. c, Southeast profile of East Chamber after excavation in 2015. d, Northwest profile of East Chamber after excavation in 2016. White circles represent samples collected for sediment DNA analysis. Individual sample numbers are provided in Supplementary Figs. 1 (Main) and 2 (East); sample numbers referred to in the text are indicated in b, c. Sample locations in South Chamber are indicated in Extended Data Fig. 3a, b, Supplementary Fig. 3.