Mountain of Adventure by Enid Blyton (Vintage 1969 Illustrated)

The Mountain of Adventure is the fifth thrilling instalment in the Adventure series by Enid Blyton, one of the best-loved children’s writers of all time.Surely a peaceful holiday in the Welsh mountains will keep the children out of trouble! But the mystery of a rumbling mountain soon has them thirsty for more adventure. Philip, Dinah, Lucy-Ann, Jack and Kiki the parrot are determined to explore the mountain and uncover its secret, but first they must escape from a pack of ravenous wolves and a mad genius who plans to rule the world!