Galorndon Core is a geologically unstable, barely habitable planet in Federation space, located 0.5 light years from the Romulan Neutral Zone. The atmosphere of the planet creates severe electromagnetic storms that interfere with sensors and transporters.
In 2366, the Romulan scout ship Pi crashed on this planet and the USS Enterprise-D was sent to investigate. The away team sent to the planet found the scout ship destroyed (deliberately, after it had crashed) and recovered a surviving crewmember. Unfortunately, Lieutenant Commander Geordi La Forge was trapped on the surface of the planet with another Romulan survivor, Centurion Bochra. Prolonged exposure of humanoids to the intense magnetic fields on Galorndon Core will result in synaptic breakdown. Bochra suffered from erratic metabolism and loss of sensation in his lower limbs, while La Forge became blind, even though his VISOR worked perfectly.
In 2368, Galorndon Core was the rendezvous point for the delivery of a stolen deflector array to a Barolian freighter.