Haunted House 
Dreaming of a haunted house represents an unsettled past. You may have unresolved problems with past friends or family which are causing you feelings of guilt or anxiety.
Dreaming that you are lost or trapped inside a haunted house means that these feelings have limited your abilities in other aspects of your life.
Lord Voldemort
Voldemort in a dream represents an antagonist in your life. Voldemort may also represent negative feelings, thoughts, or emotions inside yourself.
Bottomless Pit
If you dream of a bottomless pit, you are feeling hopelessness and despair in your waking life. The bottomless pit may be indirectly referring to your conclusion and acceptance that an issue has overcome you and is never-ending.