# Steinsalz-Kaliwerk-Winterhall-Bergbaumuseum-Bochum-2025

- By: Tuxyso
- Date: 2025-06-08
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Steinsalz-Kaliwerk-Winterhall-Bergbaumuseum-Bochum-2025.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/4/47/Steinsalz-Kaliwerk-Winterhall-Bergbaumuseum-Bochum-2025.jpg/1920px-Steinsalz-Kaliwerk-Winterhall-Bergbaumuseum-Bochum-2025.jpg
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Rock salt from a former Wintershall potash mine in Heringen, Hesse, Germany. Permian, Lopingian, Zechstein Formation, approximately 255 million years old. On display at the German Mining Museum in Bochum.