Reflex Point, also known by the code name SX Point 83, was the location of the containment complex where the remains of the SDF-1 were buried after the Battle of New Macross City in 2014.
During the Second Robotech War, the Robotech Masters sought to recover the hidden Protoculture Matrix. It contents, the Invid Flower of Life, had already begun to break through the containment unit of the SDF-1 wreckage. In an act of desperation, Zor Prime blew up a Tirolian Mothership above the three giant burial mounds in an attempt to wipe out the flowers. However, the attempt backfired as the blast only succeeded in spreading the spores around the Earth.
Within a year, the Invid Sensor Nebula pinpointed the growth of the Flower of Life on Earth and the Invid Invasion began. The Army of the Southern Cross and other Earth forces, already weakened by war with the Robotech Masters, were no match for the Invid. Reflex Point soon fell under the control of the Invid Queen - also known as the Regess.
After years of failed attempts to liberate the Earth, the returning Robotech Expeditionary Force launched a massive final assault to retake Reflex Point. Led by the SDF-4, the expedition utilized new Shadow Fighters and was prepared to use Neutron-S missiles to destroy Reflex Point and the Earth if the mission failed.
At the command of the Invid Regess, the Invid amassed their life forces and abandoned Reflex Point and the Earth. The departing burst of energy wiped out the Neutron-S missiles and many REF ships in the process. Afterwards, the famed singer Yellow Dancer held a farewell concert near the ruins of Reflex Point to celebrate the end of the Third Robotech War.

The containment complex at Reflex Point was created to securely store, and eventually hide, the Protoculture Matrix.

Despite futile attempts to hide the Protoculture Matrix under layers of earth at SX Point 83, the Robotech Masters would eventually locate it and trigger the coming of the Invid.

Reflex Point, seen here from space, has remained tightly under the control of the Invid for years despite repeated attempts to recapture it by the Robotech Expeditionary Force.