Dungeons sit below everything else, so they are read as buried fears, guilt or memories locked away. Dream tradition sees a dungeon less as punishment than as a place you are being asked to look into.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.