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Thematic: Geodiversity
- Non-welded YTT
- Haranggaol, welded MTT
- Haranggaol, welded HDT (Haranggaol Dacitic Tuff)
- Haranggoal, Andesitic lava
Geological Aspects
Panorama of the natural landscape on the road to the Ds area. Harangaol, Simalungun, showing the caldera walls consisting of a sequence of YTT (topmost), MTT and OTT deposits. The landscape of the Harangaol Dacitic Tuff (HDT) deposit unit, which is very compact, is found in the Ds area. Haranggaol, shows layers with a slope tending to the west – northwest. Pumice rock pyroclastic flow deposits from YTT are exposed on the cliffs of the road to Haranggaol at a height, and these deposits have not experienced welding.
Biological Aspects
In the potential agricultural flora of the rice fields, also among the rocks, there is candlenut (Allecurites mollucana), which is a spice in almost many Batak dishes. The parts used are seeds which contain quite a lot of fat and are used for medicines, Shallots, Palm Trees, Mango, Coffee, Rice, Cloves, Corn, Bananas, etc. Meanwhile, for Fauna there are the Amang, Long-tailed Monkeys, Wild Boar, Civets, Pangolins, Hedgehogs, Black Cats, Squirrels, Bats, Slow Loris, Tongue Snakes, Chili Snakes, Ground/Paddy Snakes, Spoon Snakes, Lizards, Lizards, etc.
Cultural Aspects
In Pematang Purba Village there is a complex of traditional houses of the Simalungun community, better known as the Bolon house. In the complex area, you can find several houses, including Rumah Godang, Sopo Godang, and several kings’ tombs. The Bolon house complex has been well managed by both central and regional governments. Tourist visits are also increasing and are the tourist destination of choice for Simalungun Regency. In general, Simalungun traditional houses are the same as other traditional Batak houses, namely in the form of houses on stilts with wooden support pillars. As with traditional Batak houses in general, the entrance is also made small so that when you enter the house, you can bow as a form of respect. The roof is made of palm fiber and at the end there is a small buffalo symbol. There is one main house which is in a worrying condition because there are parts that are about to collapse and require attention for its preservation.
