The Cave
It has been said by interpreters that if one sees themselves entering a cave made of metal and finding a hollow within it, this may indicate that their wife might be cunning or deceptive in matters concerning herself or others.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.