We [will develop] the idea that the three-dimensional continuum of our experience does not constitute
the totality of spiritual or material reality. One feature of this idea is that there exist worlds, or realms of
experience, which are located here on the earth, but which cannot be perceived or visited by human beings
possessing ordinary sensory powers... This concept of "higher dimensional" space is closely tied together with the idea of varying levels of sensory development in sentient beings. Access between locations depends on the operation of senses of action and senses of perception, and thus it should be possible in principle to enlarge the "space" of one's experience by increasing the scope of one's sensory powers.
Vedic Physics--The Nature of Space, Time, and Matter