This is a walk to love or hate. And the DwD jury's still out on this 'country park' that has a walk route through the pretty much untouched remains of a copper mine that had been running almost continuously for perhaps 4,000 years.    The colours of the spoil heaps are extraordinary, and anyone with a vague interest in metallurgy will find plenty of interest. But Jem's nose wasn't thrilled by the experience, and he wasn't too impressed at an on lead walk either.