Cartago is a forested world. It is home to the Byrsa, people with Greek and Roman roots who live in simple villages and series of caves and tunnels. The planet was visited frequently by the Goa'uld who harvested the population as hosts. Shak'l was killed by Teal'c when he led one such attack on Cartago.
Cross Reference: Byrsa, Cor-ai, Hanno, Shak'l
Episode Reference: Cor-ai