From The Stargate Omnipedia
Planet where an underground community of exiles from the Taldur
thrive. These caves beneath Hadante are dimly lit and house a colony of criminals. Population control is based on the ruling of fear or hope.
Many believe their salvation lies in eliminating themselves within the unstable energy vortex of the Stargate, believing they will be ejected out the other side.
For a long period of time the Destroyer of Worlds, Linea, survived on Hadante, until SG-1 arrived and used her Cold-fusion plants to power the gate and escape with her.
HOME TO - Prisoners of Hadante
FIRST APPEARED - Prisoners
Prisoners - SG-1 arrives on Hadante, and with the aid of Linea's cold fusion plants, eventually manages an escape.