Thang Hen Lake is located in Quoc Toan Commune, Tra Linh District, 30km north of Cao Bang. The lake consists of 36 large and small lakes on high peaks, thousands of meters above sea level. The main lake is lozenge, 300 meters wide and 1,000 meters long. It is a beautiful lake among lakes in the rocky mountains. Legend has it that before, there was a guy Tay ethnic, clever tuxedo, sobbing heart girl in the area. He passed the exam and was rewarded with seven days of honoring the novitiate and then the capital. This time, he was married to her Bjooc na na and beautiful. Thang Du Phja Oac - Phja Den Eco - tourism area Cao Bang tourism guide 11 The attachment to his young wife, he forgot to go to the capital, the new Saturday night memory , breaking up with his wife and father and mother, and then slipping all his young horses past thirty-six stone valleys. The thirty-six valleys at that time were 36 large and small lakes in the mountainous area of ​​Tra Linh district, symbolizing the footsteps of the talented young man. Have a chance to come to Thang Hen, visitors will enjoy the specialties of the mountains, visit the villages of the Tay, the Nung, camp fire, listen to the song, snare drum, human heart, boating to visit the lake and play tennis ...