From a user's question on /r/interestingasfuck.
[Using the method pictured] (http://i.imgur.com/ibbc92d.png) it's obviously a pretty elaborate project, was this undertaken by forced labor or did the Roman Legions construct them? Did it vary depending on where the roads were being constructed and materials available or did they just use what was available and call it good?
Follow up question: I'd read something about (but can't find good sources) on when wheelbarrows started being used. Did the Romans use them (as the leftmost person depicted in the picture)?
