Those that know about portals are familiar with energy vortex gateways, in theory anyway. Many sense landscape portals, for good or ill, and embrace or avoid accordingly. While there's a lot of ideas about portals, one is that they are technological gateways installed by ET's/Matrix/controllers/hackers, no doubt for their own agenda. Interior portals in rooms are probably bleed-through from earth portals under the house. Seen a ghost lately? May be an interdimensional pathway aka portal. Years ago I looked up and saw a 'ghostly' woman in the hall who was as startled to see me as I was her! That wasn't the only strange thing that happened there, but even then I knew it was some kind of technological glitch.