"Orcus Patera is an enigmatic elliptical depression near Mars’s equator, in the eastern hemisphere of the planet. Located between the volcanoes of Elysium Mons and Olympus Mons [...]" -- Source: esa.int

"My family is using the OP area for decades as a test site for all kinds of vehicles. GravLev bikes, rovers and even some exotic crafts. That's how we came up with the name when we decided to try some of these machines in a professional racing environment." -- Source: spectrum.mars.opr.about-us