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This is a series of 18 very-easy-to-find (mostly) magnetic nanos hidden (mostly) along the sea wall in Tollesbury Wick Marshes - surely one of the most peaceful and muggle-free locations in the UK.

Other Schoolfrenz caches can be found here

The whole walk has a good terrain but is 7.5 miles long so this only suitable for able walkers. Allocate 3 to 4 hours for the walk and a refreshment break. Take a camera for the stunning views. If it is a hot day protect yourself from the sun with cream and a hat - there is no shade on this route.

The emphasis is on the scenic views and exercise since the caches are in obvious hides, and most are accompanied by a photograph and location description.

Park in Tollesbury village square (N 51° 45.497' E 0° 49.974'); there is usually plenty of room. To get you in the mood you could tackle Church Micro 525 St Marys, Tollesbury before you depart.

There is a a pub on the square: the King's Head and a convenience store: McColl's; but I would highly recommend a backpack and picnic to make this a morning/afternoon out - but take your litter home.

The following overview map shows the recommended route and approximate cache locations.