溶岩 ようがん円頂 えんちょう きゅうではありません
yōgan'enchōkyūdewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 溶岩円頂丘

1. Is not a lava dome.; Is not a lava dome (polite).

Negative
Polite
Formal Register