CCDB: The collapse caldera worldwide database (version 4.0, 2019)

The rationale behind constructing this new database is to create a comprehensive catalogue including all known or identified collapse calderas. The availability of accurate and comprehensive statistics is vital to understand these volcanic structures . Thus, this extensive data compilation should be an accessible and useful tool for studying and understanding caldera collapse processes . The final aim of the CCDB is to update the current field based knowledge on calderas, by merging together the abovementioned databases and complementing them with the existing peer-reviewed articles on calderas. This database does not include all the calderas of the world but tries to be representative. The current files is the latest update corresponding to papers published up to 2019.