If we forget the star map's purpose for a second, I still see it as likely that the "temple" and the Tomb (which is exactly what it is since it was spelled out to be as such), were booby-trapped, or a black goo collection system. The cargo hold's vials, which were in the SHIP, not the temple, and stacked horizontally, implies that those vials are STORED. The ones in the tomb are placed vertically in arcs, as if placed carefully, in front of the giant head. They are placed there almost ceremonially. Basically, they are ACTIVE versions of the stored vials found in the cargo hold, unlike the stored vials, these have a purpose in being positioned there.
David takes one with him, and in it are bottles with black liquid. What is not clear is the purpose of the vials being placed in that room. Are they placed there to collect goo? Or are they a sort of alarm/trap system to kill those who go in?
If they are there to collect goo, we can imagine the jockeys go there, collect it (almost as if taking an offering), and store it in their ships and leave with them.
If they are there a bit like mines, it might explain why the murals start to erase: the thing is erasing the murals because the humans are not supposed to see them, it is not meant for them, and they must die. In that case, the ship may have landed, and the vials were placed there by the jockeys, potentially because they knew humans (or other species) had been invited there.