The Lord of the Rings, Book V, Chapter two
To that Stone the Company came and halted in the dead of night. Then Elrohir gave to Aragorn a silver horn, and he blew upon it and it seemed to those that stood near that they heard a sound of answering horns, as if it was an echo in deep caves far away. No other sound they heard, and yet they were aware of a great host gathered all about the hill on which they stood; and a chill wind like the breath of ghosts came down from the mountains. But Aragorn dismounted, and standing by the Stone he cried in a great voice:
‘Oathbreakers, why have ye come?’
And a voice was heard out of the night that answered him, as if from far away:
‘To fulfil our oath and have peace.’
Then Aragorn said: ‘The hour is come at last. Now I go to Pelargir upon Anduin, and ye shall come after me. And when all this land is clean of the servants of Sauron, I will hold the oath fulfilled, and ye shall have peace and depart for ever. For I am Elessar, Isildur’s heir of Gondor.’ And with that he bade Halbarad unfurl the great standard which he had brought; and behold! it was black, and if there was any device upon it, it was hidden in the darkness. Then there was silence, and not a whisper nor a sigh was heard again all the long night. The Company camped beside the Stone, but they slept little, because of the dread of the Shadows that hedged them round.
But when the dawn came, cold and pale, Aragorn rose at once, and he led the Company forth upon the journey of greatest haste and weariness that any among them had known, save he alone, and only his will held them to go on.
No other mortal Men could have endured it, none but the Dúnedain of the North, and with them Gimli the Dwarf and Legolas of the Elves.
They passed Tarlang’s Neck and came into Lamedon; and the Shadow Host pressed behind and fear went on before them, until they came to Calembel upon Ciril, and the sun went down like blood behind Pinnath Gelin away in the West behind them. The township and the fords of Ciril they found deserted, for many men had gone away to war, and all that were left fled to the hills at the rumour of the coming of the King of the Dead. But the next day there came no dawn, and the Grey Company passed on into the darkness of the Storm of Mordor and were lost to mortal sight; but the Dead followed them.