Good to have you back even if you are stealing Wi-fi.<br/><br/>An interesting little story of Texas.  Texans love their minerals and I've been amazed at how much climates change even over thousands of years let alone millions.  I had trouble finding good reference material for the land for 50,000 BC.  I did find some on the ice age, at its worst which is what I used, but I toned it down just a little.  They're several thousand years from the worst of the ice age, but it's still cold compared to today.<br/><br/>I'm not so convinced about using bits of guardrail as an axe either, but people used iron, copper and even stone for axes.  Even if it isn't much compared to a modern axe, I would think that a sharpened bit of steel would still be a lot better than a stone axe.  I think they might spend as much time sharpening their axes and pounding them back into shape, but they will probably cut wood.  Although it will probably feel like trying to cut down a tree with a hoe.<br/><br/>Shovels should be easy peasy in comparison.  Cut off a chunk of gaurdrail, attach to a bit of wood and you've got a scoop on a stick.  Although I'm not entirely certain how they'll cut steel.