According to Kinbote (in VN’s novel Pale Fire, 1962, Shade’s mad commentator who imagines that he is Charles the Beloved, the last self-exiled king of Zembla), he writes his Commentary, Index and Foreword (in that order) to Shade's poem in Cedarn, Utana. In his Commentary Kinbote calls Cedarn “a ghost town:”
Lines 609-614: Nor can one help, etc.
This passage is different in the draft: