A soundshed map shows how the noise of a person shouting from Pueblo Alto (marked 3) would spread through the vicinity. These maps depict the rise over ambient sound pressure level (in decibels above background noise levels). Reprinted from Journal of Archaeological Science: Reports, In Press, Primeau and Witt, Soundscapes in the Past: Investigating Sound at the Landscape Level, 2017, with permission from Elsevier., Author provided (No reuse) theconversation.com