Order's Last Mission Quest

In a number of obscure texts and scrolls is passing mention of something known as the Order. Knowledge about the Order seems to have died along with the forgotten city Thalos, but a few clues have correlated it and a place known as Stonegaard Keep. The location was thought lost until Heroes discovered that it and accursed Shadow Keep were one and the same.

Every so often in decades past, a young scholar believing to have made a breakthrough in the study of the Order would make the trek to Shadow Keep, braving the ogres and hounds North of Ofcol, to meditate in the keep's library, hoping for an insight. They stopped making the journey when they gradually realized that nobody was returning.

NOTE: This quest is for heroes not of the "low" variety, though there is no sublevel requirement. Grouped players can participate together.

This quest, when completed, will grant Agent Of The Order Insignia. The quest can be repeated for material rewards, but the rewards tied to the insignia will not be granted again.

An explanation of how to do this question would be helpful: Anyone who has done it is free to contribute.