To facilitate the industrial sector, potential reserves are known
to exist in North Tapanuli. Like for instance diatomaceous earth
200 million tons, lime - stone 100 million tons, mica 20 million tons
graphite 67,5 tons and zeolites 1,5 million tons. Besides the above,
26 other minerals - exact output unknown, such as iron ore, coal,
gold and silver. Also thermal springs in Pahae Jae District exploited
by Pertamina in joint cooperation with Unocal.
RIVERS AND MOUNTAINS
As seen from Hutabarat village, magnificent views over Situmandi
river, rice fields, dwelling houses and mount (dolok) Martimbang
(1,500 meters) in the background. River Situmandi, after flowing
10 kilometers, it discharges into the indian Ocean some 66 km
west of Tarutung.