Ystwyth: from the hills, between the hills

Here's the river's main flow, about mid-way down the dendritic structure of its catchment towards the sea. What would we do without the water cycle that sustains our lives?

 

But this isn't an altogether benign landscape. There was a long period of lead mining that's left a legacy of water pollution.

 

ymgynghori.cyfoethnaturiol.cymru/metal-mines/cwmystwyth-l...

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