Sap Kon Lake is the largest natural lake in Thailand. It is located in the Malay Peninsula in the southern part of the country near the city of Surat Thani, and covers an area of 1,040 km². Sub Con contains a large number of Irrawaddy dolphins, and you can watch them when you visit this picturesque lake, which also gives you the opportunity to walk and cycle on its banks to enjoy the beautiful scenery.