What's actually there
The room belongs to Harbetsuvan's compact architecture layer, where exact plans, feature relationships, and possible encircling or geophysical evidence still need careful source support.
What to notice
Area D6 is a named Harbetsuvan structure context. It should be read beside the paired-pillar structure, not merged with it. Possible geophysical or encircling feature claims need clear boundaries. Detailed plan and phase relationships remain open. This page is public-safe as a context guide with caveats.