is one of the geological sites in the Mt Paektu area registered as a global geopark. Situated in the forest of the vast Paektu lava plateau, the picturesque lake is about five kilometres north of downtown Samjiyon.
It is so called because there are three ponds side by side (sam means three, ji pond).
In ancient times a river was flowing northward before it was blocked by lava from the volcanic eruptions of Mt Paektu and its vicinity to form the present lake.
The ponds changed a lot in their appearance as the pumice erupted from Mt Paektu volcano piled up.
The largest and southwestern pond is called Pond No. 1. In the middle of the pond is a densely-wooded islet.
The pond northeast of Pond No. 1 is called Pond No. 2, and the pond about 370 metres northeast of Pond No. 2, Pond No. 3.
Pond No. 1 and Pond No. 2 are linked by a small bridge.
Basalt forms the bedrock of the lake and the land surface is covered with a layer of pumice 3-5 metres deep.
Lake Samji is a closed lake. It is 3.8 metres at its deepest and 1.8 metres on average. As it is surrounded by a wide forest of larch, birch, Betula ermanii Cham, Abies nephrolepis, Picea jezoensis and other species of trees, the lake presents beautiful landscape.
It is under protection as a natural monument.
Ri Yong Sik
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