Simanggang is a town and the capital of Sri Aman District and Sri Aman Division in Sarawak, east Malaysia. Located on the Lupar River, it is …Simanggang is a town and the capital of Sri Aman District and Sri Aman Division in Sarawak, east Malaysia. Located on the Lupar River, it is 193 kilometres, a three-hour drive, from Kuching, the capital of Sarawak. It is a trade center for the timber, oil palm, rubber, and pepper of its mostly agricultural district.