The Interstitial Domain of Upper Avernum is a gargantuan, environmentally stunning nation, notable for its keen interest in outer space, rampant corporate plagiarism, and absence of drug laws. The hard-nosed, hard-working, democratic population of 45.357 billion Upper Avernumians enjoy extensive civil freedoms, particularly in social issues, while business tends to be more regulated.

The enormous government juggles the competing demands of Social Policy, Healthcare, and Education. It meets to discuss matters of state in the capital city of New Silvar. The average income tax rate is 68.9%.

The Upper Avernumian economy, worth a remarkable 2,166 trillion ermarian marks a year, is quite specialized and dominated by the Woodchip Exports industry, with significant contributions from Basket Weaving, Beef-Based Agriculture, and Gambling. Average income is 47,757 ermarian marks, and evenly distributed, with the richest citizens earning only 3.6 times as much as the poorest.

Space shuttles regularly launch rubbish into space, scenic mountain valleys are flooded with water as damming projects get underway, major cities are suffering under water rationing, and children are brainwashed at a young age to accept "Love and peace!" as a way of life. Crime is totally unknown. Upper Avernum's national animal is the magical ooze, which frolics freely in the nation's many lush forests, and its national religion is the Church of Anama.

Upper Avernum is ranked 232,537^th in the world and 2^nd in Exile for Largest Trout Fishing Sector, scoring -2.37 on the Nemo Depletion Efficiency Index.