Songo Mnara, once a thriving city off the coast of Tanzania in East Africa, has been empty and abandoned for many more centuries than it flourished. A city no longer, it has crumbled, unoccupied and undisturbed, for more than 600 years. The island town, which developed as a trading port, has remained relatively untouched since it was deserted around 1500. Jeffrey Fleisher, an assistant professor of anthropology at Rice University, already has spent...
