Explore Secret Stories Secrets of Surrey Canal Tour, a self-guided interactive walking tour to enjoy whenever you want. This audio tour is part of an Ordnance Survey series of bite-sized, tongue-in-cheek stories. Expect nutty nature, smelly smugglers, raucous royals you get the idea. Discover the surprising history behind one of South London’s most unusual parks, the Surrey Canal Walk. Today it’s filled with fantastic flowers and greenery galore, but if you tried to walk here less than half a century ago, you might have tripped over a hundred-year-old pram in a massive rubbish heap or even drowned! Total length: 2 miles; Suggested age range: 4+ Purchase this Tour (and more) in the Secret Stories App, available for free download from Android Play and Apple App store. You\'ll find more details of the tour and what it contains in the app!