As Luteus Island is located in the middle of the River Lethe, one has two options to get to it; one is to swim, and the other is to navigate the causeway. This is easier said than done, though. A thin, shifting shoal extending across from the western bank, it is difficult to see under the water, and almost never shows up in the same place twice. It makes the island superbly defensible, for a single sentry could hold off all comers at the narrows where the causeway abuts the dropoff of the bank.

All of the island's banks are steep, but the promonitory is especially so, a wide outcropping of stone overhanging the swirling waters where the river splits around it. It is of the same stone as the ruined town, and in places one can see where blocks were quarried for its building. Mostly, though, it is worn smooth, its cracks and imperfections covered by moss. A peaceful place, with a good view of the river and the causeway, meetings are usually held here.