The Máhanaxar, where the Valar hold council, is just outside Valmar next to the mound where the Two Trees are, so it's logical Melkor would be led past them as he's taken to judgement.
Part 140: Time's up
Next time: Part 142: Judgement day
Chibis by tektek.org
Original story by and copyright to J R R Tolkien, ed. C Tolkien: Primarily based on the Silmarillion, but incorporating ideas from the 12-volume History of Middle Earth series.
Questions and comments welcome!