What does 洞窟 mean?
洞窟 is a Japanese noun meaning “cave, cavern, grotto” in English. It is written as 洞窟 in kanji, どうくつ in hiragana, and doukutsu in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
これは私が洞窟の中で見つけたものです。
This is what I found in the cave.