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Dr. Frederick Thompson was a terran xenoarchaeologist who traveled to the world of Aiur in search of the Ziggurat. After evading the blockade and quarantine imposed by the Terran Dominion on the planet, he managed to reach the surface. Here, he had to deal with both air and ground zerg patrols, an ordeal which lasted for two weeks and led to starvation. Eventually he reached his goal, leaving behind his final words;
I've finally seen my dream take shape before my very eyes. I've found the Ziggurat, and it's more beautiful than I can imagine. I can die now a happy man.
2000-08-18. Ziggurat. StarCraft Compendium Map Archives. Accessed on 2007-11-22