There used to be a Colliery in Rocher Vale. There are a couple of weirs and recent landslips reveal that the river bank is mostly made of mashed-up brick. The only building still standing is the engine house. They've fenced it off now but back in the '80s my kids used to swarm all over it.
The Vale broadens out at Park Bridge- formerly the site of an iron works, now an industrial heritage centre. From there I walked home by way of Deanshut Clough which used to be a landfill site but is now a lightly managed stretch of fields and woodland.