Our reality is created by electromagnetic energies, a grid system containing multiple realities. Portals exist at these planetary grid points that open and close from one dimension to another, where information and entities flow back and forth.
Large portals are found in most power places, such as the Great Pyramid, Stonehenge, the Mayan Pyramids, Machu Picchu, and other sacred sites. It is believed that black holes are interdimensional portals connecting the multiverse. Portals are not only located at these major grid points but smaller portals can be found just about anywhere. It's all about connecting consciously.
By raising our frequency, we can energetically create and pass through these portals visiting other parts of the universe and dimensions. Elevation to the astral plane is part of passing through the portal, and it is from this platform of awareness that many experiences are possible.
It is thought that in our 3rd dimension reality we experience other dimensions by travel through these portals during dream-time, meditation, hallucinogenic experiences, etc, where there is no time or space. It is there we gain access to information of higher knowledge.