Muara Muntai in detail
Kapal biasa pass in the afternoon (between 5pm and 6pm) heading upriver, and around midnight heading down.
A ces to/from Kota Bangun (the nearest bus stop) costs 200,000Rp for the two-hour journey.
Charter a ces (around 500,000Rp) to Lake Jempang country, to visit villages and longhouses, with the impeccably cheerful Udin Ban. If he's not around, other local boatmen will find you.