Interesting re: flints. I saw some field clearance nuggets (or whatever the correct name for a lump of flint is) on the way to Hunters Burgh, which were certainly large enough for handaxes, is that small?
Can you tell I'm no flint expert? ;-)
Re the cursus & related platform in the LB, I wondered if it was related to the mines & the transport of flint. What would create those lines though is a different matter, some sort of specially created wheeled cart thing?