This paper presents an application of visual data mining
technique to Earth-Observation images for exploring very
large image archives. We present a visual data mining
workstation solution and create some use cases in order to
demonstrate its functionality. This tool allows interactive
exploration and analysis of very large, high complexity,
and non-visual data sets stored into a database by using
human-machine communication. The tool relies on image
processing components that transform the image content to
primitive feature vectors and a graphical user interface, which allows the exploration of the entire image archive. The use cases are based on Synthetic Aperture Radar images, digital orthophotos and photos in-situ