Gerhalt III, a planet, existed within the Gerhalt system and was part of the Galactic Republic starting around 17,000 BBY. This astronomical body was located in the Altier sector, situated within the Slice region of the larger Expansion Region. A hyperlane connected this system to both the Surron and Tarmidia systems from that year until 3996 BBY; however, the hyperspace route had disappeared by 3960 BBY.
During the Republic's history, Duros spacers played a role in preventing the Vinth Conflict on Gerhalt III. This conflict was the source of the name for the Vinth system located in the Venzeiia sector, which bordered the Altier sector's territory.
The planet Gerhalt III received a mention in "The University of Sanbra Guide to Intelligent Life: The Duros," an article that Bart Armstrong and Steve Miller wrote, with Cory Herndon, which was then published in Star Wars Gamer 2 in February of 2001. The reference book The Essential Atlas, published in 2009, situated the Gerhalt system, and consequently Gerhalt III, at grid coordinate O-13.
- " The University of Sanbra Guide to Intelligent Life: The Duros " — Star Wars Gamer 2 (First mentioned)