The sweat lodge is a dark, hot womb of prayer from which people emerge renewed. Dreaming of it is read as an intense but healing passage, letting go of what has been weighing on you.
Has this come up in your dreams before? What was going on in your life then?
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.