For all those brave souls, you step into the opening of the hatch, and the column of air slows your descent and deposits you gently on the floor.
This chamber seems to be a continuation of the one above, including the three plates on one end of the room. The left and center plates look very similar, throwing up shafts of light to their counterparts above, but the right plate is clearly fed by the flower petal-like arrangement of spheres, each containing a growing abhuman. There must be hundred of them arranged around the walls, and all of them are fed by streams of clear fluid, that stem from a river of the same, fed in turn by a spring at the far end of the room that seems to well up from the floor. The spring is surrounded by seemingly natural chunks of rock, and seems incongruous with everything else in this complex.
A peculiar thing you note is that at the entrance to every smaller stream of fluid are one or more flexible colored membranes that the fluid flows through, tinting it slightly before it goes to feed the developing abhumans. The air here is warm, human, and fragrant with the scent of earth, salt, and water.
At a panel on the wall across from the landing zone, Wisco is just pulling his hand away from a multi-colored panel on the wall.
As all of this is going on, a half-dozen of the spheres fall from the wall, and float in the river to the right-side plate. The membranes of the spheres flow together until it creates the single tough membrane you remember from your first encounter with the abhumans upstairs in the Assembly Chamber. Then the plate rises, bringing them up. Six more membranes begin to grow from the "stems" where the others had fallen.