Miri River is the body of water that splits Miri Peninsula and the mainland Miri, flowing out to sea from inland, curving at Lutong Town. It is incorrectly marked as Sungai Baong in some online maps, while other references online confused it with Baram River.

A National Park with incredible diversity as over 1,100 tree species are dwelling within a 50 hectare plot. Many plants and insects are yet to be discovered and identified. Alluring waterfalls and bathing pools are the main attraction that are characteristic of Sarawakian Borneo jungle experiences.