Kharak discovered by the Kushan, descendants of the city's inhabitants. This city was also built out of the ruins of a prison ship referred to by the same name, its original name lost to history. Parts of the ship are found in other locations inhabited by the exiled Hiigaran's, such as the Great Nebula.The Khar-Toba is the name given to the ruins of an ancient city on the world of
The Khar-Toba was a non-combatant ship which originally came to Kharak from Hiigara, carrying with it a portion of the exiled Kushan race. The Taiidan had commissioned the convoy to evacuate the Exiles to a world where they would never again see Hiigara or disturb the victorious Taiidan Empire. The Khar-Toba was actually one of many similar vessels in a convoy, though many were destroyed by the hardships and perils of extended deep space travel. In the Bentusi retelling of the Kushan exile story, five such craft are shown descending to Kharak, so either the others were destroyed during re-entry or they were never rediscovered; no mention of the sister ships being on Kharak was ever made.
The Khar-Toba suffered considerable damage during planetfall, and was unable to relocate to the more temperate polar regions of Kharak. It served as the foundation for the first city of Kharak, from which a network of tunnels and buildings grew. The wrecked ship itself was stripped to a near-skeletal state; even its outer hull plating was used in the construction of buildings. The Khar-Toba's hyperspace core was moved from inside the ship to a shielded underground chamber, serving as the power plant for the city. When the core failed for the last time, the city (which was of the highest technological level on the entire planet for thousands of years) is suspected to have fallen.
Khar-Toba was re-discovered in the Kharak year 1106 KDS when a radar satellite intended to scan the Kharak System turned the wrong way and scanned Kharak instead. By 1110 an expedition had been sent to further investigate the detected metallic wreckage of the Khar-Toba. Over the next 25 years, the discovery of the fusion core, hyperdrive and Guidestone within the Khar-Toba wreckage have catapulted the Kushan people in technology and gave the motivation and capability to seek out their roots on Hiigara.