"This part of North Sulawesi was undergone multiple geologic stages. It is considered to be a ‘young’ continent of 5-24 million years of age which has undergone explosive volcanism more recently (1.5 to 5 million years ago) which resulted in the volcanic tuff that characterizes the existing topography. Manado Tua is an inactive volcano formed in a classical cone shape with a 27-45' slope. The island rises over 600 m above sea level, the highest elevation in the park. Bunaken Island has volcanic origins with a significant amount of uplifted fossil coral. At the west and central part of Bunaken Island (71m high) there is a flat plateau about 5Om above mean sea level (msl). Nain Island is also a dome-shaped island, 139m in height and with a slope of 20-40". Mantehage Island is relatively flat and seems to be sinking into the sea. The island has extensive mangrove forest flats, partially separated by saltwater channels. Siladen is a low-lying coral sand island with no significant topography. Arakan-Wawontulap and Molas-Wori on the mainland of North Sulawesi are relatively flat areas at the base of volcanic hills. The park has unique bathymetry which is an attraction for divers."
Source: UNESCO World Heritage Tentative List
Wow..what colorful and beautiful postcard of Bunaken National Park and marine and freshwater fish stamps used. Postmarked September 17, 2010 and arrived in Penang on September 28, 2010. Thanks to Shinta of Indonesia. Terima kasih.
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