The next photo shows the blocks that go on top of the pillars added in, along with the final position of the extra sphinx (es?).
Even deserts have some plant life, so the next step was to add a tiny bit of greenery to liven things a little (pun intended!!). I used white glue to attach green flock and then some pale grass (it looks like dried-up grass to me) to finish off the piece.
Finally, I got out the lights and some minis to take some nice photos of my newest terrain piece!