A huge detention tank under the city of Bristol. After a few years of trying to find this place, it was a bit of a triumph amongst us locals to be honest.
Not Dreadnaught! Often forgotten about, Rednaught is actually quite a long one.
Probably Bristol’s most visited storm drain. Extending underground from Bishopsworth to its outfall at the river Avon by Coronation Road, it’s a relatively easy one to walk albeit fairly uneventful.