Off to Norfolk any suggestions?

S I find myself looking forward to a rather unexpected weeks holiday on the north Norfolk coast, staying on a site near a small village called Blakeneyu to be precise. At which point I remind myself that I've spent my adult life taking the mick out of Norfolk for being flat and rather dull. So now we're actually going there I need some good family riding suggestions. Days out are likely to involve me ( a keen commuter) my wife ( a little less keen) eldest son (age 7) and youngest son (age 5 on a tag along).
Suggestions very much welcomed.
Suggestions very much welcomed.

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Help I'm Being Oppressed
Worth a look if you have the right type of bikes.
Burls Ti Tourer for Tarmac, Saracen aluminium full suss for trails
Wells is nice.
Beware the big-eared, banjo-playing, webbed-fingered locals though
http://www.flickr.com/photos/[email protected]/3336802663/
Yeah, Thetford is good for youngsters, but it's about 2hrs in the car from Blakeney. :?
Even a commuter bike will get you round the Green, or even the Blue, at Thetford.
Oops, sorry, I don't know the area at all, just went up there for week. did the fens sportif and some gentle mtb'ing.
Burls Ti Tourer for Tarmac, Saracen aluminium full suss for trails