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.