Posted 1st January 1970 by Why is 4.06 called "The Rock"? › Forums › Cult Sci Fi Series › Lexx › Why is 4.06 called "The Rock"? › Why is 4.06 called "The Rock"? 3rd March 2002 at 12:34 am #57112 AnonymousGuest Could also be because of Brud asking ppl if they’d “cradle his rock.”