Question: The loch where the Dorback Burn river originates is home to the ruins of what castle?
Sentence (from "Krishnavati river"): Several Ochre Coloured Pottery culture sites (also identified as late Harappan phase of Indus Valley Civilisation culture) have been found along the banks of Krishnavati, Sahibi river, Dohan river (another tributary of Sahibi river originates near Neem Ka Thana in Alwar district) and Sota River (another tributaries of Sahibi river that merges with Sahibi at Behror in Alwar district).
Relevant evidence: No