Archaeologists excavating the site of Lacanja Tzeltal in Mexico have discovered the ruins of the capital of a kingdom known from Classic period Maya inscriptions as Sak Tz’i’ (White Dog). Among their findings is a trove of Maya monuments, one of which has an important inscription describing rituals, battles, a mythical water serpent and the dance of a rain god. Map of architectural groups and stream channels at the site of Lacanja Tzeltal, Mexico....