Arden was the home world of the Shenn. It was a planet of hills and forests. It had more than one continent.
In 2673, humans established the colony of Tairngaire on Arden. They constructed many bases. Among them were Touchstone Base, located on the northern continent, and Oberon, near the Phebe mountain range. (PROSE: Shadowmind)
Geology
Hypergems were found in great quantities on Arden, though the colonists named the gem Oberontie (due to the proximity of where they were found). (PROSE: Shadowmind)