Depending on the dosage, the effects of DMT can range from a multitude of sensations, from bizarre, beautiful and even 'impossible' visions to literally jaw hanging awe as one is propelled into other dimensions of existence where human language and logic cannot even begin to describe or comprehend.
The following is an excerpt from Psychedelic Monographs and Essays which discusses the different levels of a DMT experience:
Level I: Pre-Hallucinatory experience
This stage is characterized by an interior flowing of energy/consciousness. It may be extremely intense. It may have a positive feeling content.
Level II: Vivid, brilliantly colored, geometric visual hallucinations
Here one is observing a patterned field, basically two dimensional, although it may have a pulsating quality. One may remember having seen this before.
Transitional Phase (Level IIB?): tunnel or breakthrough experience
One may see or fly through a tunnel (a passage to the next level). A veil may part, a membrane may be rent. There is a breakthrough to another world (or perhaps even a series of breakthroughs).
Alternatively, it may also happen that the transition from Level II to Level III is abrupt, almost instantaneous, with no experience of transition.
Level III: Three- or higher-dimensional space, possible contact with entities.
This stage is characterized by the experience of being in an "objective" space, that is, a space of at least three dimensions in which objects or entities may be encountered.
Sometimes the entities appear to be intelligent and communicating beings. This stage may be extremely energetic with an experience of everything happening incomprehensibly fast. Alternatively it may be relatively coherent.
Travel is possible at Level III. One may, for example, assume the form and consciousness of a bird, and fly as a bird does (cf. Castaneda, The Teachings of Don Juan pp. 191-196). The limits of of this stage, if any, are unknown. There may be transitions to further stages.
If one would like to read some first hand experiences of DMT journeys, you can download a collection of DMT trip reports here.
Heres the link where i got it-
https://www.dmt-nexus.me/FAQ.aspx
I have also heard from people, on some levels you can see in 4d basically you see all sides of something at once.
"You are an explorer, and you represent our species, and the greatest good you can do is to bring back a new idea, because our world is endangered by the absence of good ideas. Our world is in crisis because of the absence of consciousness."
β Terence McKenna
"They Say It helps when you close yours eyes cowboy"