This river is the natural southern border of manuel antonio national park the section you will exploregoes from the town of villanueva in the mountains to the llamarn bridge on the road from quepos to dominical on these 8 miles of whitewater youwill run rapids like la piata el cesar robin hood running the first 5 miles of continuous action on the second half of therun the river opens up on the pacific flat lands giving youthe opportunity to enjoy the view of many species of bi