Volcanic activity is not exclusive to Earth. Traces of volcanism, such as tunnels generated by magma, have been identified on Mars and the Moon. And now the University of Trento has discovered an empty lava tube deep within Venus, a planet whose surface and geology have been heavily influenced by volcanic activity. This result was achieved as part of an Italian Space Agency-funded project. Nature Communications reported on the discovery of a tunnel beneath Venus's surface using radar data processing. "Our understanding of Venus remains restricted, and we have yet to directly observe the processes that take place beneath the surface of Earth's 'sister planet'. The identification and verification of the existence of a volcanic cavity are therefore of paramount importance, as they enable us to test the theories that have been advanced for many years", as explained by Lorenzo Bruzzone, the research coordinator and head of the Remote Sensing Laboratory at the Department of Information Engineering and Computer Science at the University of Trento."This discovery", he continues, "furthers our comprehension of the processes that influenced the evolution of Venus and provides novel perspectives for the study of the planet".