I am far from being even an amateur sleuth of lost languages but I admire the work of epigraphers. Today I found a TED talk on the Indus Valley Script. The Indus valley civilization goes back to the third millennium, bce and link to and interesting site (http://www.harappa.com/har/har0.html).
Filed under: Art, Language Tagged: | archaeology, art, culture, Indus Valley, language, linguistics, lost language, undeciphered