'Pillar of Heaven', the mountain in the midst of Númenor, upon whose summit was the Hallow of Eru Ilúvatar. 322-4, 329, 332-3, 336, 343, 345, 348 Meres of Twilight See Aelin-uial. Mereth Aderthad The 'Feast of Reuniting' held by Fingolfin near the Pools of Ivrin. 132-3