It extends from the eastern margin of Mount Lamington in the west to the Pacific Ocean coast in the east .
The Hydrographers Range is a forested mountain range in the Oro Province of southeastern Papua New Guinea .
Hydrographers Range extends from the eastern margin of Mount Lamington in the west to the Pacific Ocean coast in the east .
The Hydrographers Range is a forested mountain range in the Oro Province of southeastern Papua New Guinea .