The Miner is a human wandering the Forbidden Oasis.
The miner is the last known survivor of the Envers Mining Company's outpost situated in the Forbidden Oasis. She appears disoriented when encountered, rambling about her lost wedding ring. She has been there for so long that she doesn't know what the Inquisition is.
She regrets having thrown away her wedding ring and wants it back, as a reminder of her former husband. In thanks for retrieving her ring, she will give the Inquisitor a key leading to one of her stashes, namely the one at the Par'as Cavern.