Eden Project visitors will be pitted against villains springing from the pages of some of the most popular children's books ever as Roald Dahl's Halloweden is unleashed this October half-term (October 21-29).

The whole family can brave challenges from notorious characters such as the ghastly giants from Roald Dahl's The BFG and those devious practical jokers, Mr and Mrs Twit.

Roald Dahl's Halloweden will consist of a terrifying trail of immersive experiences across Eden based on five of the most iconic stories.

The Witches inspires a scary – but vitally important – training session for spotting real witches while Fantastic Mr Fox's Farm challenges visitors to travel through tunnels and sneak out plump chickens whilst evading capture from Boggis, Bunce and Bean.

Mr and Mrs Twit's house is full of terrible tricks and pranks and The BFG's cave is a magical, mystical wonder – just be sure to tiptoe from the dream-making station so as not to wake the sleeping giants.

Matilda's formidable headmistress and former Olympian Miss Trunchbull has set some demanding sports day challenges which must be mastered to avoid ending up in the Chokey.

Polly Randle, Eden Live Project Lead, said: “This Halloweden is going to be extra special with the addition of some of the scariest and most memorable villains from everyone's favourite Roald Dahl's stories.

“We're delighted to have the involvement of the Roald Dahl Literary Estate in creating this unique and imaginative programme that is all set to delight – and terrify – all our visitors.”

Bernie Hall, Marketing Director at Roald Dahl Literary Estate, said: “We are thrilled to be working with Eden during the Halloweden event this year as it provides the perfect opportunity for some of our most infamous villains to be a part of one of the most popular events in the UK and at Eden, and for visitors to be able to experience this enchanting event.

“It has been fantastic to further our relationship with Eden which began with the Biomes hosting Lego Billy for Roald Dahl Day this year.”

Roald Dahl's Halloweden takes place every day from October 21 to 29 and is included in the price of admission to Eden with no booking required.

For an evening of fang-tastic fun the popular party extravaganza Little Monsters' Ball returns to Eden on Saturday, October 28, at 6pm.

Everyone can don their favourite Halloween costumes and shake their bones on one of two dancefloors before indulging in some ghoulish grub such as eyeball pizza or roasted bat wings.

They can then enjoy a spine-tingling skate on the eerie Eden ice rink which will be open throughout half-term week.