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. 2021 Oct 22;11:20876. doi: 10.1038/s41598-021-00090-3

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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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Present day location of Lake Czechowskie with coring site and catchment and modern road and railroad locations (upper left, image

source: air image provided by Head Office of Geodesy and Cartography, Warsaw, Poland). Upper right: core photograph showing the varved sediment interval from AD 1489 – 1432. Bottom: Course of the via Marchionis and location of the lake (red circle) on a map which provide special to this manuscript by Piotr Kann.