The Mandailings in the Homeland
By E. Edwards McKinnon
There may have been yet another route leading northeast from Rao into the Padang Lawas. To the south, an alternative route appears to have linked Rao with Muara Takus in the valley of the Batang Mahat, a tributary of the Kampar kan. At Rao, the main route enters the valley of the Batang Sumpur, a tributary of the Sungei Rokan Kiri. It then passes through Tanjung Medan and Lubuk Sikaping via Bonjol into Minangkabau territory. From Bonjol, it seems that there were two alternative routes southwards. One followed approximately the route of the modern road whilst the second ran via Kota Tinggi and Paya Kumbuh to Bua. From Bua it was possible to gain access to the headwaters of the Batang Hari and proceed downstream to Muara Tebo and Muara Jambi.
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