The great Librarius Omnis, also known as the Libraries Omnis, is an underground continent-spanning library on Mars. It has been the subject of several Techno-archaeologist expeditions over the millennia.
According to legend, at the dawn of the Imperium, the legendary Techno-archaeologist Arkhan Land led an expedition into this labyrinth of catacombs with the intention of finding an intact functioning Standard Template Construct database. No such device was ever found, but instead they collected data-slates containing information on a heavily armoured battle tank along with knowledge of rare anti-gravitic plates. These twin discoveries led to the creation of the Land Raider and Land Speeder, which were named after the discoverer of the technology that was uncovered in the catacombs.
- 1: White Dwarf 245 (UK), pg. 21
- 2: Imperial Armour Volume Two - Space Marines and Forces of the Inquisition, pg. 83