Caldera-forming volcanoes impact humans, infrastructures and environments on local scales due to periods of seismic unrest, and global scales due large explosive eruptions producing wide-spread tephra fallout and climate effects. To fully understand caldera volcanism in a rift environment we must consider internally-driven magmatic processes as well as external processes (e.g. tectonics, sea-level fluctuations, glaciations, sector collapses), which can exert controls on transitions in vent architecture and eruptive styles. Recent advances in the study of the Santorini-Kolumbo volcanic field have indicated fundamental links between volcanism and external processes. Unravelling the causal relationships and timescales of the feedbacks between the internal magmatic processes and external crustal stresses, require knowledge of the eruptive history, transitions in eruptive behaviour, transitions in geochemistry, links between regional tectonics and local unrest, which are rarely available and require inter-disciplinary efforts. This session seeks to provide an integrated understanding of calderas in a rift setting through interdisciplinary work including geochemistry, petrology, volcanology, seismology, and geophysics. We invite contributions in relation to Santorini and it’s recent unrest, as well as any multi-disciplinary contributions on other rift hosted caldera volcanoes, such as the Taupo Volcanic Zone or the East African Rift, in order to expand our discussions on caldera’s in a rift environment.