Point singularity
The point singularity was a location in the Bajoran wormhole. This singularity, located between normal space in the Alpha Quadrant and the GBF membrane, was the terminus of the wormhole.

On the chart "The Tunnel in the Sky", which was seen in the schoolroom aboard Deep Space 9 in 2369, the point singularity was one of the components labeled on a map of the Bajoran wormhole. ()
Cartography