Multiple calibrated laboratory images of experiments to determine leakage rates through faults and geological heterogeneities. Two sequences of images, and associated movie (avi file) depicting laboratory fault experiments as described in; Gilmore, K., Sahu, C., Benham, G., Neufeld, J., & Bickle, M. (2022). Leakage dynamics of fault zones: Experimental and analytical study with application to CO2 storage. Journal of Fluid Mechanics, 931, A31. doi:10.1017/jfm.2021.970