There are a number of attractions around Stung Treng: the widest range of local tours is run by Xplore Asia, but there are other options available.
Riverside Guesthouse Tours This guesthouse is a good option for boat trips, either up the Mekong to the Laos border and back or along the narrower Sekong.
Xplore Asia xplore-cambodia.com. A good range of interesting, albeit pricey, trips, including a grand four- to five-day journey down the Mekong to Kratie that takes in parts of the Mekong Discovery Trail using a combination of cycling, trekking and kayaking. More affordable excursions include one-day trips combining kayaking, trekking and dolphin watching; a full day’s kayaking; half-day cycling and kayaking trips; and fishing trips. They can also arrange boat trips to the Sopheak Mitt falls, dolphin watching and a spectacular stretch of flooded forest.