Can anybody recall a special train which, probably on a weekend, visited various lines around Bristol not usually open for passenger services? It was possibly at least 20 years ago, I was on it, but can't recall exactly where we went, though I have memories of being on the line to Portishead (as far as you could go) and also north of Bristol, stopping near a quarry.
Bit vague, I realise, but somebody might know!
