Kuala Belait
Mumong was a small Malay village on the banks of the Belait River further upstream from Kuala Belait on the way to Kuala Balai. The development of Kuala Belait at the turn of the century as the district capital and the construction of Jalan Singa Menteri and Jalan Tengah to like Kuala Belait to Seria saw the village grow south of Jalan Singa Menteri to become mainly a commuter community serving Kuala Belait and Seria towns. The construction of the Seria Bypass in the 1980s further encouraged more settlement of the area as it provided a second link from the village to Kuala Belait and Seria.