The name given to an extra-dimensional site found by travel through the Waterdeep Sewers. It consists of a circle of cut standing stones, each with a bas-relief, which when taken together, show a narrative pattern of travel and trade. The party unlocked the site by taking symbolic journeys between the stones, which transformed according to these journeys.
When activated, and some waves of demons were defeated, from the stones, it appeared that one could see anywhere within Toril, with few exceptions. And travel there via some form of interdimensional travel. Travel times and distances were indistinct, as were compass directions, almost as if they didn’t exist at all in this area.