Swim remembers that upon entering the K-land, an OBE will happen; and all of the entities have a similar blue-grey metallic 'electrical static' quality to them. They speak (some of them) and their bodies are outlined similar to a blue-grey neon sign. Swim says the further the trip goes, the entities may appear more and more vivid.
Sadly there is a lack of K inspired artwork. This music video brilliantly and visually shows what K-land looked like (to SWIM).
Tool- Schism
http://youtu.be/ATsrCNJhic4Adam Jones of the band was the art director for this video...
This video and song SWIM has understood to be closely related to the K/DMT trip...
IN NO WAY is K recommended. This video is merely a rare instance, or a visual example, which reminded SWIM of K-land.
There are studies (links on Erowid's Ketamine page) that show that females, including female animals, are reported to have "more profound" reactions to K, in comparison to men.
This may explain why SWIM reported a rebirth trip. It may be that females that naturally have more sensitivity to K's effects, acts as an entirely different trip. Out of DMT, LSD, Mushrooms etc., Ketamine is actually one of the most extensively researched psychedelics, by doctors and science.
There is an Erowid page on K with tons of links to studies done.