Post-caldera volcanism reveals shallow priming of an intra-ocean arc andesitic caldera: Hunga volcano, Tonga, SW Pacific Marco Brenna 1 , Shane J. Cronin 2 , Ian E.M. Smith 2 , Alessio Pontesilli 3 , Manuela Tost 4 , Simon Barker 5 , Sisi Tonga’onevai 6 , Taaniela Kula 6 , and Rennie Vaiomounga 6 1 Department of Geology, University of Otago, Dunedin, New Zealand 2 School of Environment, University of Auckland, Auckland, New Zealand 3 Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy 4 Land Development and Engineering Ltd, Gisborne, New Zealand 5 School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand 6 Geology Unit, Natural Resources Division, Ministry of Lands and Natural Resources, Nuku‘alofa, Tonga *corresponding author: marco.brenna@otago.ac.nz Statement on publication status Please note, this manuscript has been peer reviewed and is currently in press in the journal Lithos. Due to the sudden eruption of Hunga volcano in 2022 and publication delays with the journal we have supplied a pre-print through Earth ArXiv. The article was officially accepted by Lithos on December 24th 2022 but has not yet been assigned a DOI. Brenna et al. (in press) Lithos 1