This volume details Jan Zahle's investigations of subterranean structures close to the Maussolleion. Successive spoilations -- including Newton's -- have greatly muddled the archaeological record, and the Danish excavations uncovered evidence of another complication: plans for the site appear to have changed during construction, so what was originally intended as a modest extension of the existing structures evolves into a huge tomb on an immense terrace. Zahle's thorough sifting of evidence resolves many contradictions, though uncertainties still remain.