The surface of Yavin 4 was divided into several continental masses, two of which were Starloft and Wetyin. Notable natural formations included Massassi Valley, Skygazer Hill, and the Ferra Groves. The verdant world had a comfortable, temperate climate but a challenging ecosystem and dangerous predators.

The moon’s landmasses were covered by dense jungles and rain forests whose flora included purple-barked Massassi trees, grenade fungi, bioluminescent orchids, and climbing ferns. Yavin 4 also had swampy areas. The moon, however, was completely lacking in any mineral resources of significance.