Question: The loch where the Dorback Burn river originates is home to the ruins of what castle?
Sentence (from "Lochindorb"): Lochindorb (from the Scottish Gaelic: "Loch nan Doirb" meaning "loch of the minnows") is a freshwater loch north of Grantown on Spey in the Highland council area of Scotland.
Relevant evidence: No