Anchorage Class C Surface Area
Flying within the Anchorage Class C Surface Area is governed by: 14 CFR 91.130.
Anchorage Terminal Area "Segments"
Flying within the Anchorage Terminal Area is governed by: 14 CFR 93, Subpart D.
The terminal area is divided into "segments" and specific traffic patterns.
Altitudes within these "segments" are restricted over the Knik Arm. The below graphic dipicts the "vertical airspace reservation:"

The above graphic simulates a cockpit perspective from Point Mackenzie looking southeast.