Reflex Point a code name assigned to the location of the Invid hive complex inhabited by the Invid Queen Regess in the Robotech animated series, and is also thought to be located upon the ruins of the SDF-1. The location is later referred to by the Army of the Southern Cross as SX Point 83.
In Robotech episode 75 Separate Ways as well as Robotech: The Shadow Chronicles movie, the location of the Invid Hive at Reflex Point is laid out over the Great Lakes of North America. However, it is never mentioned or explained how the wreckage of the SDF-1 was moved to the Great Lakes, given the fact that the Battle of New Macross City (in which SDF-1 was destroyed) took place in Alaska, where the former Grand Cannon was built.
During the Second Robotech War, the Robotech Masters sought to recover the hidden protoculture matrix. Its contents, the Invid Flower of Life, had already begun to break through the containment unit of the SDF-1 wreckage. Zor Prime tried to seal of the flowers of life by crashing a Tirolian Mothership above the three giant burial mounds. However, the attempt backfired as the blast further spread the spores. Within a year, the Invid took notice of the Flower of Life on Earth and invaded Earth. Reflex Point soon fell under the control of the Invid.
After years of failed attempts to liberate the Earth, the returning Robotech Expeditionary Force launched a massive final assault to retake Reflex Point. After a bloody battle that came to a Pyrrhic conclusion, the Invid amassed their life forces and abandoned Reflex Point and the Earth, thus ending the Third Robotech War.