Structured panel with non-parallel cavity walls

A panel, comprising:

• a core including a corrugated base and a corrugated stringer;
• the corrugated base including a plurality of base corrugations configured from at least a plurality of first base segments, a plurality of second base segments and a plurality of base bridge segments, a first of the plurality of base corrugations including a first of the plurality of first base segments, a first of the plurality of second base segments and a first of the plurality of base bridge segments, the first of the plurality of second base segments non-parallel to the first of the plurality of first base segments, the first of the plurality of base bridge segments extending laterally between and connected to the first of the plurality of first base segments and the first of the plurality of second base segments, and the first of the plurality of base corrugations forming a first channel that extends laterally between and longitudinally along the first of the plurality of first base segments and the first of the plurality of second base segments;
• and
• the corrugated stringer including a plurality of stringer corrugations arranged longitudinally along and within the first channel, the plurality of stringer corrugations configured from at least a plurality of first stringer segments, a plurality of second stringer segments and a plurality of stringer bridge segments, a first of the plurality of stringer corrugations including a first of the plurality of first stringer segments, a first of the plurality of second stringer segments and a first of the plurality of stringer bridge segments, the first of the plurality of second stringer segments non-parallel to the first of the plurality of first stringer segments, the first of the plurality of stringer bridge segments extending longitudinally between and connected to the first of the plurality of first stringer segments and the first of the plurality of second stringer segments, and the first of the plurality of stringer bridge segments attached to the first of the plurality of base bridge segments.