The South Decumanus is one of two prominent colonnaded streets that intersect with the Cardo Maximus, the main colonnaded street of ancient Gerasa. First built in the 1st century CE, the South Decumanus was colonnaded and repaved around 170 CE. It intersects with the Cardo at the South Tetrakionion plaza.
Source:
Khouri,
Rami G. Jerash: A Brief Guide to the Antiquities. Amman: Al Kutba,
1988.