Faction Chests

Faction Chests are respawning chests in the Miasma area of Savathûn's Throne World. They are marked by beams of green light and are the third step of the Trust Goes Both Ways quest. That step needs four faction chests looted and two patrols completed in Miasma. Once it is done, return to Fynch to finish the step and receive the reward.

Chests respawn at random, so if only two or three are visible, leave the area and come back later. Detection Ghost mods such as the Expert Tracker, which picks up chests within about 75 meters, help find them. The outer edges of the area, including the coast and outer walls, are also worth checking for hidden caves.