Freeze a Zeb inside the left wall of the room, and use it to clip into the wall and X-Ray climb. Note that jumping directly against the wall to clip into it will put Samus into a forced crouch, unable to use X-Ray. Samus may either 1) perform a Crystal Flash to stand up, 2) use neutral knockback from a Reo to put Samus standing inside the wall, or 3) use the frozen Reo as a platform to run and clip into the wall. To manipulate the Reo into a suitable position, lure it to the left and crouch at the edge of the platform; jump as needed to bring it back on camera when it goes off; it should perform 4 big swoops down to the left, 2 small swoops (hitting the overhang above), then 5 more big swoops, after which it will enter a slow hover moving directly towards Samus. Freeze the Reo when its left side is approximately flush with the ledge, or up to about a tile to the right. After X-Ray climbing about 1.5 screens, the sound of the crumble blocks breaking is an indication that it is safe to end the climb, either by jumping up or by falling out to the right. Alternatively, there's no harm in continuing to climb, as the lack of door means it's impossible to climb beyond the destination.