also spelled Sarabha or Tharaba) is the only surviving gate of Bagan (Pagan). The gate is located to the east of the old city. Although the Burmese chronicles assert that the city of Bagan was fortified in 849 CE, radiocarbon dating of evidence dates the foundation of the main walls to c. 1020 CE.[1] If the city was fortified in the 9th century as the chronicles assert, the fortifications must have been built with less durable materials like mud