That's just the basic set up for what could be a couple of nodes and how to set them up dynamically. In my head, I had to stop drawing cause I was gonna keep on going with:
#1) a silver dragon's corpse with the throat ripped out hanging from a slaughter hook chained to its leg. We can hear the sounds of explosions and cold whooshs the lower the sounds around them.
#2) We see a fat princess, huge beyond measure with long thick arms, grabbing a dragon by the muzzle in one hand, free leg in the other, biting the neck out of a dragon, eating it's dragon breath sack and the tender neck meats that surround it. Tendrils of smoke and flickers of dying embers flit out of the surprised eyes of the wyrmling gold dragon. Blood runs down the fat princess's dress.
#3) You can see a conveyor of dragon slaughter hooks, each with their own metalic dragon, spitting out it's breath weapon in consternation as it struggles against fate, wings pulling dragons in different directions to no avail. There is a ramp along the path of the driver that crosses the path of the dragons. If one had the correct tool (Evil magic sword item from location B or good magic spell item from location C) they could free the closest dragon to them during the jump. They will only get one change to jump and save them.
#4) Or they could go around the ramp, avoid the dragons entirely, and raid the pile of dragon's breath glands that the princess spits out into a bit of a "boneyard" or "pit pit".
The players can only go up over the ramp or down into the pit pit.