Void Knight?

[efq]

Apperntly Its a Minigame. If you go there You die, you dont lose anything and dont return to lunby.. is this true?

[R]

Yes its called pest control, get there by talking to the "Squire" at port sarim docks..

I recommend using the following;

http://www.tip.it/runescape/?page=pest_control.htm

Good luck. :)