A k-hole is a very strong ketamine experience. During this, you are often unable to move or talk. Contact with the outside world is no longer possible. It is difficult to differentiate between what is real and what is only in your mind. It can be a very interesting or informative experience, but it could also be very frightening. Make sure you have the opportunity to lie down if you plan on taking a lot of ketamine. In summary, it could be either a positive or negative experience for you.