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The walk across Cors-goch or Tregaron Bog is interesting in its own right. This raised peat bog is an internationally important wetland site, a haven for a range of plants and animals which have evolved to take advantage of the patchwork of sphagnum moss and scrub. Parts of it are still under water: we are back in Looking-glass Land here, with Alice rowing through the pale willow leaves and the purple of the sedge.
The bog is also home to a bizarre experiment in archaeological reconstruction. A young woman from the University of York has been burying organic material (to be precise, pigs’ trotters) at marked sites in the bog and excavating them two years later to monitor changes in their condition. This is designed to illuminate some of the processes by which human bodies are preserved in peat bogs as a result of the anaerobic decay of the sphagnum moss.
