The Valley Of Adventure (The Adventure Series) (Book 3)

While trying to board a flight to their next holiday, the children mistakenly step onto the wrong plane and find themselves soaring over unfamiliar mountains and deep into unknown territory. When the plane lands in a remote, hidden valley, the pilot disappears, and the children are left alone with only each other, their bаскраскѕ, and Kiki. But this valley isn't uninhabited. Strange signs point to ancient secrets, lost treasure, and people who will do anything to protect what lies hidden. As Jack stumbles upon a cave filled with paintings and Dinah notices someone watching them from the treeline, the children realize they've wandered into something far older and far more dangerous than they imagined.