There’s a big, dome-shaped mound on my regular walk through the local pine forest. Light brown, it’s seemingly made of soil but, on closer inspection, it’s covered in a thatch of heather, pine needles, moss and dirt. Although its summit stands higher than my waist, it makes for a surprisingly inconspicuous feature because, even a few metres away, it’s well hidden behind the heather that flanks it. You could therefore be forgiven for not really noticing mounds like this, huge as they are. For the past five months, the mound has been still and lifeless. But today is that rarest…