1989 Map of Unimak D-1

About this map

Unimak Island and the expansive Aleutian Islands Wilderness dominate this late-twentieth-century topographical survey. The landscape is characterized by its complex coastal hydrology, where the Bering Sea meets the northern shores of the archipelago at Cape Lapin. Further inland, the map details significant brackish water systems including Christianson Lagoon and Peterson Lagoon, which are separated from the open waters of Urilia Bay by narrow coastal strips. This environment, captured in the 1980s, reflects a territory largely untouched by industrial infrastructure, emphasizing natural features like Twin Peak and the submerged Slime Bank in Bristol Bay. The lack of roads or established settlements on the sheet underscores the remote nature of the Aleutians East Borough during this period.