Image: New discovered Moon Base.
The secret Moon Base is universally known in the security establishment and its existence is considered top secret.
Image left: A classified photo from Apollo 10 clearly shows the existence of the secret base on the dark side of the moon.
But probably there are more alien or man-made bases on the Moon.
John Lenard Walson made a footage of the Moon (Part of the Moon that always faces the Earth) taken from his back yard with a 8 inch telescope.