Special K (Ketamine) used to be an animal medicine at Vets. In the 90s i had friends that would do massive amounts frequently. Having a bad trip they called falling into a K hole. They said it was like continually falling into your grave and a dark hole... but there was no ground so you just kept falling and falling. I passed on the opportunity back then. hahaha

Sounds like an interesting approach to medicinal applications in this type of usage in that kind of environment.