To dream of being in an underground habitation, you are in danger of losing reputation and fortune.
To dream of riding on an underground railway, foretells that you will engage in some peculiar speculation which will contribute to your distress and anxiety.
Dreams that take place underground represent the dreamer’s need to explore feelings – possibly painful ones – that she’s been keeping hidden away.
Coming back up from underground in the dream suggests that the dreamer is ready to do this.
If the dreamer dreams he is in a house built underground is an omen that can mean more then one thing and must be analyzed with the entire dream in mind.
The first thing it means is a chance of loss of fortune and reputation if certain aspects of daily living are not changed.
The second is a need and desire for greater security; hence hiding from life by living ‘underground’.
Another would be a withdrawing from all aspects of life that may interfere with the dreamers peace of mind, or reluctance to make decisions.