Crowning New York's iconic skyline, HALO's virtual stone circle is etched in the atmosphere and expressed in shadow on the tidal East River. Viewed in large-scale and 3D, in real time and space, people encounter the giant sculpture through their phone camera lens as a portal to alternative reality. From dawn to dusk, the symbolic circle frames Manhattan – a monolith carved in a codified marble from an ancestral mountain in Aotearoa NZ and transported via extended reality to First Nations Lenape homelands. Sited here in satellite pinned space, over a traditonal Manhatta trade route, HALO's transience amplifies an absent presence. Details in the stone grain can be seen to emerge and recede under changing light conditions while the monument stays anchored as winds rise over the river, and planes, boats and birds circle above, and boats pass below. In the public domain of a tree-lined park pier beside Brooklyn Bridge, the celestial form invites intimate and communal encounters in an uplifting reprieve in the heat of a city that never sleeps.