1.   The ring of fire contains a very large fraction of the earthquake activity of the entire planet.

2.   Each ring contains a different sound and is easy to grasp.

3.   Quartey refused to go down again but he was out on his feet, wobbling back into the ropes in search of an emergency exit no boxing ring contains.

4.   The rings contain information to help the geomancer evaluate the site.

5.   The ring contains a small eight-bit microprocessor and some computer memory.

6.   The rings contain enough material to form two sets of planets.