This collection includes the raw and inverted ERT data collected in the Kamstollen Tunnel at the Zugspitze from 2007 to 2023.It also includes the Matlab scripts for preparing the data and visualizing the results, as well as the CRTomo inversion code (Kemna, 2000).Instructions are included in the file how-to.docx. Site and methods are presented in Krautblatter et al. (2010). Further analysis of this data is presented in Scandroglio et al. (in prep.). Data collectors:- different students from 2007 to 2018 (refer to the Chair of Landslide Research, Technical University of Munich)- Riccardo Scandroglio from 2018 to 2023.Documentation and Matlab codes by Riccardo ScandroglioContact: r.scandroglio@tum.de This study was supported by the AlpSenseRely project, funded by the Bavarian State Ministry of the Environment and Consumer Protection (TUS01UFS-76976), and by the Hydro-PF project, funded by the TUM International Graduate School of Science and Technology IGSSE (Team 12.9). References: - Kemna, A. (2000). Tomographic inversion of complex resistivity: Theory and application. Der Andere Verlag.- Krautblatter, M., Verleysdonk, S., Flores‐Orozco, A., & Kemna, A. (2010). Temperature‐calibrated imaging of seasonal changes in permafrost rock walls by quantitative electrical resistivity tomography (Zugspitze, German/Austrian Alps). Journal of Geophysical Research: Earth Surface, 115(F2).