I was able to get through dropping one teleporter on the ground in front of the stone face (as close as possible, just to the left of centre) and drag and dropping it to the other side (finding a small region where it would be highlighted in white, on the bottom step of the first set of stairs, about a third of the way from the left). Trying again centred and farther to the left I didn't find a place to drop, but going a little to the left again I found a place a little more than half way to the stairs that I could drop, on the left side near the circular platform.