Um'ami Ruins

Um'ami Ruins is a new stage in. It was introduced at the beginning of Fresh Season 2023 along with Manta Maria.

Quotes
"SRL back with an "all hands" of our own - we need all SRL teams to help today! First up, exclusive video of a new stage: Um'ami Ruins. It's an ancient site with mysterious artifacts and reliefs, some retaining original colors. Could it have been a prehistoric Turf War battle site?"

- @SplatoonNA on Twitter

Etymology
Um'ami is a corruption of "umami" (savoriness), which is one of five basic tastes.