溶岩 ようがん洞穴 ほらあなじゃありませんでした
yōganhorānajārimasendeshita

Noun
Desu Copula

The polite, past negative form of 溶岩洞穴

1. Was not a lava cave.; It wasn't a lava cave.

Past/Perfective
Negative
Polite
Terminal Form