Stuart Robson's expert English translation of the Tantu Panggelaran gives his readers ready access to this important work, which provides insight into how the author and his contemporary Javanese readers imagined the realities of the world in which they lived. We learn how they conceived the creation of this world and understood the relationship between the gods and men. Importantly, we learn also how they conceived a history of the foundation and spread of Bhairava Śivaite hermitages, shrines and temples. The work traces the history of this network from its origins in the vicinity of the Dieng plateau and the northern plains of Batang and Pekalongan to its subsequent expansion to the Tengger and Hyang Massifs of eastern Java. Hadi Sidomulyo's impressive commentary, an amalgam of textual analysis and the survey of archaeological sites, is a model for the way in which further research of this sort might be conducted and underlines the urgent need for further archaeological surveys and the future excavation of archaeological sites.—Professor Emeritus Peter Worsley, Indonesian Studies, University of Sydney