1971's Apollo 15 was among the most ambitious of the six lunar landings: the Falcon Lunar Module had to cross a mountain range that rises higher than the Himalayas before landing beside Hadley Rille, an elongated canyon-like channel. A team based at ESA’s ESAC astronomy centre in Spain, working with UK company Timelab Technologies, has recreated the landing using SPICE software, integrating a high-resolution lunar model.