Abstract An experiment was carried out on September 9, 1983, using the ARIES infrared radiometer to map the superficial temperature of the Mount Etna (Sicily, Italy) and of the Island of Vulcano. The plane crossed Mount Etna in five paths to cover completely the upper, vegetationless, zone, and followed one path over Vulcano. The data were geometrically corrected by using reference points located on the topographic map and on the initial images. The final ground resolution was about ten meters. The flight took place too late in the morning to avoid relief thermal effects, but active zones of the volcano's surface were clearly recognized and mapped.