As each historical slideshow was presented, Jason was deeply moved.
Such massive underground lava canals were unimaginable for a primitive society! How much labor would that have required? How many lives had to be sacrificed to carve them out?
Keep in mind that this was entirely underground, making the engineering far more difficult than digging the greatest continental canals on Earth! Furthermore, magma slowly cools and solidifies into solid rock. Once a canal was completed, it required constant, dangerous maintenance to keep the flow active, further multiplying the workload.
