Arcurio is the second largest center of population on Caldari Prime. After initially beginning life as a colony that developed around a vast network of atmospheric processing arrays used on Caldari Prime during the terraforming process, Arcurio expanded rapidly for centuries despite the harsh environment on the planet, due to its more favorable location close to the equator and its position close to two large bodies of water to the north and south.
From the upcoming book EVE – Source. Catch a glimpse of Source and some of its creators at New York Comic Con 2013