WATCH: Explore the hidden secrets of Shropshire's Dana prison
Here's a view of Shropshire's former prison you would never normally expect to see – unless you were trying to escape.
New tours have been launched at Shrewsbury's Dana allowing people to explore tunnels and the original prison below the current site.
The tunnel tours begin today and will allow people to see the remains of the first prison, which was built on the site back in 1791.
Joel Campbell, of Jailhouse Tours, said that the tours would open up a whole new aspect of the prison's history.
He said: "Underneath the existing prison there is another prison but in parts of that the floor has been filled in so where it was 10 feet deep before there are places where it is now only four feet and you crawling through level with the top of door frames. It is basically a cross between the prison tour and caving."
Watch a preview of the tour:
People taking part in the tours are given hard hats and boiler suits and Mr Campbell said that people who sampled the preview tours had thoroughly enjoyed the experience. He said: "They really enjoyed it, it is very different from the two tours we have been doing and it is something that people would never get to see – you can see what prison cells looked like in the 18th century and how they were split by class.
"It is very different to the prison system that came after and we are trying to show as much of that as we can."
Mr Campbell said the use of the prison as a tourist venue had proved a huge success so far.
He said: "We are looking to expand certain things and we still have another eight events planned for the rest of the year."
