Question: Ust-Omchug is on the highway northwest of which port town?
Sentence (from "Magadan"): Magadan (Russian: Магадан ; ] ) is a port town and the administrative center of Magadan Oblast, Russia, located on the Sea of Okhotsk in Nagayevo Bay in Taui Bay and serving as a gateway to the Kolyma region.
Relevant evidence: Yes