The ruins grow darker, and the tunnels begin to stink of moss that's gone too long without fresh water, or even the bare minimum sun it requires. At one point, just to see, Seraphim summons her Ghost to illuminate the structure around them. The beam casts everything in a harsh light, causing long shadows to crawl away from the Exo. Perhaps it's a fitting metaphor. Seraphim-6 comes to a halt as the hallway turns into a bridged chasm. Lichen hangs from each side of the stone-metal bridge. "Precarious," the Exo's Ghost comments, twisting to look down. It snaps back up at a sound. It sounds like rushing water, growing to a crescendo. Darkness gathers, and a chill fog sweeps through the area, coating the bridge. Massive spheres of rippling ebon begin to form. The noise grows into a scream and then the spheres burst! Flickering, twitching creatures, dangerous shadows of their former selves form and twist to peer at the small fireteam. "Taken!" Seraphim warns, dropping to a knee behind a jagged uprising on the right side of the bridge, just as incoming fire rips through their position.