A time gate, or a dimensional portal through the sixth dimension, allows travel between two analogous temporal cycles in different timelines.
In order to create a stable time gate, the following procedures must be followed: First, the time gate must be located in a geologically stable region surrounded by dense solid matter -- e.g., deep inside a cave with solid stone walls. The solid matter surrounding the time gate apparatus must be old enough to have existed in the same position on both sides of the time gate.
This is because the dimension of time is independent of the dimensions of space. For example, say New Jersey is located somewhere between Venus and Mars on a certain date. If a time traveller stepped through a time gate located in New Jersey that led ten years into the past, would he emerge in New Jersey ten years earlier, or would he appear at a point in space somewhere between Venus and Mars, or would he appear in that part of the Universe where the constantly moving Solar system was located ten years ago? All points in space are relative to one another and are constantly changing over time, so a time gate cannot be built in just any empty space; it must be linked to specific protons and atoms, which have their own mass, gravity, and space that they occupy. The properties of a proton do not change over time, so space at the subatomic level is constant and stable over long periods of time. (This is the protonic continuity principle, first postulated by Dr. Walter Reffick in the late Twenty-first Century.)
