Dreaming of a hollow can signify a feeling of emptiness or a lack of something. It could indicate a feeling of being unfulfilled, or of lacking the tools or resources to achieve something.
For example, a person may dream of a hollow in their house, perhaps indicating a lack of stability and security in their life. Dreaming of a hollow in a tree may symbolize a lack of growth or progress in their life, as if they are unable to reach the next level of success.
Dreaming of being inside a hollow may represent a feeling of being stuck or trapped in a situation, such as a job they hate or a relationship that is going nowhere. It might also represent a fear of failure, or of not reaching one’s goals.
Finally, dreaming of a hollow in a mountain can signify a lack of faith or belief in something, such as a religion, a political ideology, or a personal purpose. It may also represent a feeling of being overwhelmed or of facing an insurmountable obstacle or challenge.