The Mystery of the Indus Valley

Why this matters

Matching stone weights turning up hundreds of miles apart proves organized trade without a single receipt or letter surviving to describe it. The people who built Mohenjo-daro's grid streets and covered drains left the plan itself as evidence, brick by brick, even though the writing that would explain who was in charge is never translated.

A civilization this advanced without a decoded language forces a different kind of reading, one I have to build from drains and weights instead of sentences. John Marshall's 1924 report shows the first archaeologists on site making the same inferences students make now, working from objects toward conclusions instead of the other way around.

From one teacher to another

I tell my students up front that nobody alive can read a single word the Indus Valley people wrote, and then I hand them a civilization more carefully planned than almost anything else in the ancient world. Grid streets, covered brick sewers, matching stone weights found hundreds of miles apart - all of it reconstructed from objects, not from writing, because the Indus script has never been cracked and there is no Rosetta Stone to translate it. They read John Marshall's own 1924 announcement of the Mohenjo-daro excavations and have to sort out what he actually saw from what he could only guess. By the end they can explain why the same civilization can be this advanced and this mysterious at once.