can do to fetch me down these stones! Then may ye know whether strength avail more than skill, or skill than strength.' Thereupon at his bidding they all with one accord set to work with all manner devices, and did their utmost to fetch down the Dance. Some rigged up huge hawsers, some set to with ropes, some planted scaling ladders, all eager to get done with the work, yet natheless was none of them never a whit the forwarder. And when they were all weary and spent, Merlin burst out on laughing and put together his own engines. At last, when he had set in place everything whatsoever that was needed, he laid the stones down so lightly as none would believe, and when he had laid them down, bade carry them to the ships and place them inboard, and on this wise did they again set sail and returned unto Britain with joy, presently with a fair wind making land, and fetching the stones to their burial-place ready to set up. When this was reported unto Aurelius, he sent messengers throughout the countries of Britain, bidding summon clergy and laity, and enjoining them when summoned to assemble at the Mount of Ambrius with rejoicing and honour to set up the stones again round the foresaid burial-place. Accordingly, in obedience to the edict, came pontiffs and abbots and folk of every single order or condition that were his subjects, and when all were met together on the day appointed, Ambrosius set the crown upon his own head and celebrated the 'Whitsuntide festival right royally, giving up the three following days running to the holiday ... And when he had settled these and other matters in his realm, he bade Merlin set up the stones that he had brought from Ireland around the burial-place. Merlin accordingly obeyed his ordinance, and set them up about the compass of the burial-ground in such wise as they had stood upon Mount Killaraus in Ireland, and proved yet once again how skill surpasseth strength ...
Histories of the Kings of Britain
Geoffrey of Monmouth <1136>
BOOK VIII
CHAPTER XII
tr. by Sebastian Evans <1904>
http://www.sacred-texts.com/neu/eng/gem/gem09.htm#page_189