The Collaborative Research Organization for Historical Materials on Earthquakes and Volcanoes has been established as a collaboration between the Earthquake Research Institute and the Historiographical Institute at the University of Tokyo. In this interdisciplinary organization, historians and seismologists work together to develop a scientific database that can provide long-term information about seismic and volcanic activities in Japan by compiling and analyzing historical materials. This historical data is essential for long-term forecasts of future seismic and volcanic hazards.