The Hierarchy's base structure. The Arrival Site produces workers, scouts, and heroes. It must be present for most glyphs to be carved. Effects: -Allows construction of Reaper Drone -Allows construction of Habitat Walker -Allows construction of Assembly Walker (requires Reaper Drone) -Allows construction of Detection Drone (requires Reaper Drone) -Allows construction of Science Walker (requires Detection Drone) -Allows construction of Matter Conduit (requires Science Walker)