You can use "gates" if your frequency is high enough to perceive them.
You can build them without having a high enough frequency to use them.
Learn enough about vortexes and you will see that they can be large enough to be considered gates. Consider the trip Hitler went on that spawned the misinterpretation of the hollow earth.
You can build them without having a high enough frequency to use them.

Learn enough about vortexes and you will see that they can be large enough to be considered gates. Consider the trip Hitler went on that spawned the misinterpretation of the hollow earth.