The one who sees the tombs in his dreams is trying to hide the things deep down, that nobody could see it. If the dreamer was stuck in a tomb, then it indicates the state where he cannot find the way out from his negative thoughts or situation. Perhaps the dreamer has built the barriers, but does not know how to demolish them, therefore there is no way out.
Tomb dream meaning
Read more about dreaming of Tomb in other dream meanings interpretations.