A considerable amount of supporting research and technology development has to take place on the Earth to allow humans to explore the Moon, Mars and beyond. The Concepts for Activities in the Field for Exploration (CAFE) project aims to support such aims in an international context by preparing a complete catalogue of terrestrial analogue environments that are appropriate for testing human space exploration-related scientific field activities. As no single analogue can provide an identical representation of landforms, materials and processes found on the Moon and Mars, it is necessary to select those analogues that best represent particular regions or processes of interest.