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This area was once the base of Malaya Communist Division 2. The tunnel was built in three months in 1976, winding through the mountain for about 1 km, about 15-18 m wide with multiple entrances. It was used as the air raid shelter and food storage area. There is an exhibition about its history including the way of life in the forest.
ตู้ไปรษณีย์ใหญ่ที่สุดในประเทศไทย
Used to be at the Bell Tower intersection of Betong. It was built in 1924 before World War II as the communication post for the townspeople, through the radio implanted on top of the box, and the mail slot below it. A new box has been built in a larger size (nine metres high), and is at the City Convention Hall (ศาลาประชาคม Sala Prachakhom). The new mail box attracts a large number of tourists who come to take photographs.