Buxton residents will tell you it's a common sight and no cause for alarm, but the town's river is running ORANGE again.
The river Wye, which flows through the Derbyshire spa town, turned a vivid autumnal shade over the weekend.
Its vibrant hue is the result of water flowing through old underground mine workings and washing sediment from the rocks.
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The phenomenon regularly occurs during prolonged periods of heavy rain.
A spokesperson from the Environment Agency explained: "This occurs in areas that have historically been mined for coal.
"It is caused when the groundwater runs through the coal workings and picks up iron which, when exposed to the atmosphere, forms iron oxide and can make the river turn orange in colour.
“Such an incident has occurred in this area on many previous occasions and we are not aware of any significant harm to wildlife or the environment.”