Shangri-La.
No one knows because it is hidden. That is why it is called the Hidden Valley.
Hidden Valley Farm was created in 1858.
The Hidden Valley of Oz was created in 1951.
alley?
Crypt is a word meaning hidden. Therefore, cryptology is the study of hidden information, encryption means to make hidden, and cryptic is that something's meaning is hidden. Another word is cryptography, which means hidden writing.
vale
Village
Hidden Valley National Park was created in 1982.
hidden
Unobtrusive, hidden, inconspicuous, obscure...
The area of Hidden Valley National Park is 20.68 square kilometers.
Hidden Valley - 1916 was released on: USA: 5 November 1916