A Continuation, I'll call this one, "Yorick?"

As they raced down joyously to the city limits, something shining caught their eye. Seng and Marin, sidetracked, curiously trotted over to a strange object, which was half buried beneath the dry sand. Seng unearthed it from the ground to reveal what appeared to be a mangled mechanical forearm, with an old battered robotic hand still loosely attached. As he held it up to examine further, a small mountain of sand poured out from either end. A few spots of rust had burnt holes through the metal, with a few frayed wires hanging out from where the forearm had been presumably detached from its other parts. The sand had rubbed a myriad of small, thin scratches into the metal, but it was still clear enough to noticeably reflect the sunlight. Marin, looking over Seng's shoulder, made a barely audible "Huh."
Affixed on the arm, slowly, they both looked up directly ahead. Strewn about the plane ahead of them was a scattered collection of similar semi-visible metallic components, glinting analogously with each other and the piece in Seng's hands. In wordless impulse, the two spent the next half hour walking around collecting the various pieces. The horses stood in the background, aloof, occasionally paying attention to watch their masters toil.
Finally, Seng and Marin dumped their armfulls of metallic parts into the cart. They wiped their sweaty, dirty faces, though their shirtsleeves weren't much better. Marin stumbled over another small piece. He picked it up, cleared the sand out, and beckoned Seng over. In his hand, Marin held a metallic piece reminiscent of a human skull. Clearly from an android, though it's dark, empty eye sockets told of a very sad story of past dismemberment and abuse, as if these parts once composed a human being. They got back on their horses, and rode to the city's entrance. Marin rode with the metal skull in his lap, pondering it all the way.