Red Lotus Sea, Nong Han Lake The largest natural water source in Udon Thani, with an area of over 22,500 rai, it is also a famous tourist attraction that no one knows about. Because if talking about the red lotus field Udon Thani is considered the first place and the origin. The lotus blooms during the winter every year. As for the boarding point, there are several ports. You can choose which is convenient. On the boat trip, it will take approximately 1 and a half hours. We will get to see the beauty of the Red Lotus. and waterfowl that come out to feed naturally Including the buffalo that comes down to find food in the Red Lotus Sea.