apollo. (2026). Lake Zapovednoye sediment core, 2,200 years (geochemistry, pollen, chironomids, Cladocera, diatoms) (Version 1.0) [Data set]. Mysteries Department. https://mysteriesdept.com/datasets/DAT0D4ECRP02ZMM/lake-zapovednoye-sediment-core-2-200-years-geochemistry