The Dakataua Caldera is located at the northern tip of the Willaumez Peninsula, New Britain, Papua New Guinea. The peninsula includes the 350 m high andesitic Mount Makalia stratovolcano.[1] The last major collapse of Dakataua was during the Holocene around 800 CE.[2] The most recent eruption on the caldera's rim was Mount Makalia in 1890, producing lava flows and cinder cones.[3]

Dakataua
Dakataua lake on the North tip of the Willaumez Peninsula, left of the Pago volcano. On the right there is a steam plume over the sea from the Ulawun volcano.
Highest point
Elevation	400 m (1,300 ft)
Coordinates	5°3′20″S 150°6′30″E
Geography
Dakataua New Britain, Papua New Guinea
Geology
Mountain type	Stratovolcano
Volcanic arc/belt	Bismarck volcanic arc
Last eruption	1895 ± 5 years

Caldera lake

Dakataua caldera lake is about 76 m above sea level, has total surface area 48 km² (19 sq mi), and the maximum depth approximately 120 m.[4] It is horseshoe shaped, roughly bisected by a peninsula.[1] It is a freshwater lake that is alkaline with a pH of up to 8.2. It is presumed to be formed by rainwater gradually filling in the caldera.[5] While the lake supports various kinds of life, it does not support any species of fish.[6]

Migo the Lake Monster

There is a folk legend that a monster called the migo (or masali) inhabits the lake. In 1993 a Japanese film crew led by Tetsuo Nagata captured what they claimed to be the migo on film. It is presumed that the creature in the video is actually a salt water crocodile from the ocean surrounding the lake.[7]

References

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