横穴 よこあな しき石室 せきしつじゃなかったです
yokoanashikisekishitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 横穴式石室

1. It wasn't a horizontal chamber tomb.; It wasn't a side passage tomb.

Past/Perfective
Negative
Polite
Casual Register