According to Mr. Bernard (see diagram above) our world is hollow, with the crust of the earth being 800 miles thick. There exists two openings at the North and South Pole, each hole having a circumference of 1400 miles wide. At the center of the earth is not a molten core but an inner sun which is six hundred miles wide and is 2900 miles from the Inner Surfaces. The diameter of the lip at the opening at the poles is 1200 miles long, thus a person can not see the other side of the opening.

Therefore, there exists three worlds on our planet, the outer surface, where we live, the middle earth which purportedly is lined with many caverns, tunnels (made by someone), Inner Cities and people who live there and lastly the Inner Surface. How Gravity works then is the following. For the people who live on the outer surface, Gravity holds them down. For the people that live in the middle earth, the closer they get to the center of the crust (i.e. - 400 miles down), the less effect gravity will have upon them. In the book, "Etidorhpa", when this individual traveling down into the earth reached the center of gravity, i.e. where there is no gravity --- he was able to move by the power of his mind, his heart stop beating and he didn't need to eat. He described gigantic vegetation that lives under the earth as this lesser pull of gravity allows things to grow larger. Lastly for the people who live on the inner surface, they would also feel gravity pull on them to walk on this surface but since there is an inner sun (called the "Atoma", by channeler Michael Kant who appears in our crystal skull book Mysteries of the Crystal Skulls Revealed) they would have sunlight 24 hours a day. There is supposedly land masses and water bodies that exist on the Inner Earth, the same as the outer surface except the vibration and energy in the Inner Earth is more pure and of a higher vibrational frequency (some say a 4th dimensional frequency). More here-http://www.v-j-enterprises.com/holearth.html