墓に

in the grave

→ 墓
phrase Rare #44,417
in the grave 墓 means “grave,” and に marks the location or destination. With verbs like 埋める (to bury), it can be translated as “into the grave.”
JA: 花を墓に供えました。
EN: I offered flowers at the grave.

イスラム教徒は死者を墓に埋葬します。

Muslims bury the dead in graves.

母さんの墓に彼が死んだって言ったじゃない

You said he died at Mom’s grave, didn’t you?

— 罪人たち (2025)

彼を墓に埋めた。

We buried him in the grave.

墓に埋めたと言ってた…

They said they buried it in a grave…

— 続・夕陽のガンマン (1966)