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 Among the mountains, there exist a number of tops or mounts, while the highest is : bulungan Regency (Mount Makita 2,987 m, Mount Lagaparatu 1,802 m, Mount Todadaun 1,753 m, and Mount Tukuksilo 1,731 m); berau Regency (Mount Kundas 1,670 m, Mount Beriun 1,380 m and Mount Serawan 1,230 m); kutai Regency (Mount Liang Pran 2,240 m, Mount Kong Kiau 2,053 m, Mount Menyapa 2,000 m, Mount Kong Kemul 1,807 m, Mount Badat 1,700 m, Mount Kong Petah 1,684 m, Mount Batu Atan 1,652 m, and Mount Baturrok 1,548 m); pasir Regency (Mount Sarempake 1,380 m, and Mount Lumut 1,236 m).
Those mountains are potential with the mine ore, bird’s nest and phosphate.
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