Zone fifteen's north section ran hotter than the rest of the zone.
The northern boundary pressed against zone sixteen's perimeter, and zone sixteen was A-classified. The ambient bleed from an A-zone boundary created a pressure gradient—the path-layer in the north ran denser, the creatures it shaped were more developed, and Dragon Mode returned richer information here than anywhere in zone fourteen or zone fifteen's interior. That was why he kept coming back.
He entered at the seventh hour, Dragon Mode already in continuous state, and found what he was looking for on the northern ridge inside six minutes.
