Batang Duri, 12km south of Bangar, is the jumping-off point for longboat rides to Ulu Temburong National Park. As you head south the sealed road passes Malay settlements, then Murut (Lun Bawang) hamlets and finally a few modern Iban longhouses. It's definitely worth staying here overnight, or even for a few days, to delve into local Iban culture and do some serious jungle trekking.