El-Adrel IV was the uninhabited fourth planet in the El Adrel system. The planet was close to territory claimed by The Children of Tama. It was the homeworld of a non-sentient species. It was in the same sector as Kanda IV, Malindi VII, Razna V, and Shantil III. In 2368, a Tamarian deep space cruiser entered orbit of El-Adrel IV and began sending a signal to the Federation. The USS Enterprise-D arrived three weeks later and attempted to establish communications, but was unable to understand the Tamarians' language.