I find it kind of odd that the metal industry can be faster than the farming industry. And a main reason for this is that a light source is only ascetically applicable and has no real in game value. What if we applied a 50% cave in chance to mining a square without a light source near it and removed the torch newbies start with. This would slow mining to being started until after either cloth or candles are being produced and would make metal in general much rarer.
Comments?