This from Obi Wan Bucki...
Please find below a photo of the Cambrian Coast Line at Barmouth with a mix of wild garden and beach providing a bit of camoflauge for the rusted tracks.
Given that this line is the flagship/testbed for the ERTMS signalling system, the infrastructure is in a disappointing state, but with only a couple of 37's and a few DMU's converted for the new system, maybe its a bit impractical to pull weedkiller trains all the way out to the coast.
And as we are in the Age of Austerity perhaps there is little point in spending money on a route that will probably be closed anyway when ERTMS is declared a costly failure?