Complete the short story/flash fiction, that has the following first paragraph:
He moved the last rock into place and fell back on his butt. Done. His makeshift grave marker was finished. The damn dirt was too hard for him to dig so he had to build a cairn out of the plethora of rocks that littered the landscape of this deserted world. Earth-like, they said. Stupid bastards. He stood up and turned around. There is nothing on this deserted world except for a crashed space ship, one dead human, one living human and … lights?
Post a link to the story in the comments.