We drove our rental car to the foothills on Phang Nag province for a rafting trip. We signed up with Travellers rafting expedition through an agent in Aonang for a mere 750baht per person cuz we didn't require pickup and return transportation. The 5km rafting lasted a little more than 1/2 hour only which was rather short. Would go for the 9km run next time. Overall it's was fun though although bit short. The dam was open to release water around 11:15am AS water would've been low.