The article “Alkali Waters of the Ultrabasic Massif of Mount Soldatskaya, Kamchatka: Chemical and Isotopic Compositions, Mineralogy, and 14C Age of Travertines,” written by Yu.A. Taran, D.P. Savelyev, G.A. Palyanova, and B.G. Pokrovskii, was originally published electronically in Springer-Link on May 2, 2023 without Open Access. After publication in volume 510, Part 1, pages 262–268, the authors decided to make the article an Open Access publication. Therefore, the copyright of the article has been changed to © The Author(s) 2023 and the article is forthwith distributed under the terms of a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/, CC BY), which permits use, duplication, adaptation, distribution and reproduction of a work in any medium or format, as long as you cite the original author(s) and publication source, provide a link to the Creative Commons license, and indicate if changes were made.