Abashiri is a small, flat disc of rock barely 10 miles in diameter, orbiting very close to the fiery ring of Iburi. Its geography is simple: a ridge of mountains runs directly through its centre, with a small area of hills and flatland on either side. Abashiri rotates slowly and in perfect synchronisation with its orbit so that the same side of the mountanis always faces Iburi; this means that one side is constantly bathed in the light and heat of the Primary, while the other is in the permanent shadow of the mountains. From the highest peaks the edges of the disc and the stars beyond can be clearly seen.
Only two intelligent races inhabit Abashiri in any numbers, and their settlement areas are sharply divided by the mountains. On the Iburi side (sometimes called "The Face") live two tribes of primitive Thri-Kreen who thrive on the warmth and constant sunlight they enjoy. On the outward side (called "The Tail") are a handful of wild clans of Grimlocks dwelling in unending near-darkness and frigid temperatures. There are no cities or towns and the only permanent settlements are Grimlock caves and tunnels; the Thri-Kreen are nomadic. It probably has fewer than 100 inhabitants.
Abashiri produces little of value and is rarely visited by travellers from other bodies, though pirates and outlaws occasionally hide there. It is often called "Abashiri, the Old" by those who know of its existence; this arises from the ancient legend that the bodies orbiting Iburi were once living beings, lost in the phlogiston, who came to the Primary one by one. In this mythology Abashiri was believed to be the first to arrive and the last to die, and is hence the most aged.