Shantil III

Shantil III was the inhabited third planet in the Shantil system. This was the homeworld of an intelligent species. It was the site of a mytho-historical drama, in which the characters Darmok and Jalad faced a common foe on the island-continent of Tanagra, and achieved mutual understanding in the process. The story was later incorporated into the Tamarian language. (TNG: "Darmok")

According to the script, the pronunciation for Shantil was "SHAHN-til". [1]

According to Startrek.com, the Shantil system was located in the El-Adrel sector. [2]