title: Obsidian trade routes in the mayan area.
abstract: Obsidian from two sources in highland Guatemala has been found at 23 sites of the Classic Mayan civilization, mainly in the nonvolcanic lowlands to the north. The distribution, together with trade routes suggested by topography and documentary sources, suggests efficient waterborne transport and competition between sources for the lowland market.
authors.forename: N
authors.initials: N
authors.lastname: Hammond