Barry. I have seen white trout up to 6 inches long swimming around in the
Nuns Cross tunnel on Dartmoor. This tunnel is about 800 metres long and
forms part of the Devonport Leat that feeds Burrator Reservoir on
Dartmoor. The Nuns Cross tunnel cuts through part of the old West Nuns
Cross Tin Mine. The trout have obviously entered the tunnel from the leat
and have chosen to stay in the tunnel. Why this is, is beyond me. I have
seen upwards of 20 swimming around in the tunnel, but the trout that live
in the leat outside of the tunnel are their normal colours. Has anyone
any thoughts on why the trout would live in a darkened tunnel than outside
in the daylight?
Regards Chris Kelland
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