Golana was an inhabited planet in the Alpha Quadrant. This was the home of a Bajoran colony since the beginning of the 24th century. Archaeologists from the Bajoran Archaeological Institute were studying the ruins of a technologically advanced civilization that had gone extinct over two thousand years before.
In 2374, the O'Briens visited the planet again and an active time portal from this lost civilization was accidentally discovered in a cavern. The portal sent Molly O'Brien three hundred years into the past, when the planet was uninhabited. She was eventually recovered safely.