The southern end of the North Sea has lots of banks and shallows. I think there was a book written before WW1 the premise of which was that with a special combination of low tides a German army could march/wade across the North Sea and invade Britain.

http://www.youtube.com/watch?v=GUmL0PBGL38

http://www.bibliotecapleyades.net/vida_alien/esp_vida_alien_63.htm

The Terra Papers – Hidden History of Planet Earth

by Robert Morning Sky
1996

TERRA I

We are not alone.
The astronomers are wrong. The scientists are wrong.
They are here, but we cannot see them because they hide. They hide…in plain sight.
We are their servants, we are their slaves, we are their property….we are theirs.
ROBERT MORNING SKY

In time, the Star Being would come to trust the six.

By using a small crystal to create images, the Visitor began to communicate with the young men. Calling him the Star Elder, the youths sat at the knee of their Friend, examining all of the crystalline images with great care, piecing together the incredible history of our Solar system and Mankind itself.

Star Elder’s message was simple m Star Beings have been here since Earth was a barren rock. They were here when Man was created and have been here throughout his evolution. In some cases their involvement was benevolent, in some cases, it was not. Man has been guided…and he has been misled. The Star Beings have been our Gods…and our Devils.

They have always been here, and they are still here now.

When pressed to explain his presence on Earth, the “Star Elder” stunned the six. There was a war in the skies above, his ship had been downed by enemy forces!

I am called ‘Morning Sky’… Robert Morning Sky.

My grandfather was one of the six young Indian rescuers. When I was young, my grandfather told me the story about his Star visitor. He and his friends called him ‘Star Elder’, a name given out of respect. But as time passed, his name was revealed to the youths. He was called… ‘Bek’Ti’.

This is his story…and mine.