Hill sights in Morobe & Madang Provinces
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Further down the coast towards Sialum are some of the world's best examples of uplifted marine terraces. From the air it is possible to appreciate the ancient coral reefs that have been thrust upwards to form a geological staircase. The entire area, which also incorporates the Bobongara archaeological site (the oldest human habitation site in the Pacific outside of Australia), has been nominated as a World Heritage listing.