Absolute Phrase

Dear Team,

Please help me to understand the below structure-

"The single-family house constructed by the Yana, a Native American people who lived in what is now northern California, was conical in shape, its framework of poles overlaid with slabs of bark, either cedar or pine, and banked with dirt to a height of three to four feet."


Below is my analysis

IC, noun+noun modifier?

A) The single-family house constructed by the Yana, a Native American people who lived in what is now northern California, was conical in shape,

- Whole structure is an independent clause?
- Yellow highlighted part is the noun modifier (Appositives), which is modifying Yana?

B) its framework of poles overlaid with slabs of bark, either cedar or pine, and banked with dirt to a height of three to four feet.

- We are dealing with Absolute Modifier--- Noun+ Noun Modifier?
Yellow highlighted part is the Noun?

- Noun Modifiers are "overlaid with slabs of bark" & "banked with dirt to a height of three to four feet" and they are parallel and modifying "framework of poles"?

- Modifier- "either cedar or pine", which is modifying "bark"?


Thank you!