`TephroArchaeology' is a translation of the Japanese word kazanbai kokogaku (lit. volcanic ash archaeology), referring to a sub-discipline of archaeology that has developed in Japan in the last few decades. The first book compilation using the term, edited by the doyen of tephroarchaeology, geologist Arai Fusao, appeared in 1993; chapters were written by 5 geologists, 3 archaeologists, 3 geographers, an engineer, and a historian. From its beginning, this subdiscipline has been interdisciplinary in approach and applied to all time periods throughout the Japanese Islands. Honouring this...