Stallion 
To dream of a stallion represents control, intensity, valor, and liberty. If you are riding the stallion then it means that you possess or will possess these qualities.
Carousel 
To dream that you are joyfully riding a carousel may suggest a childlike sense of joy and confidence in your parent's approval of your life choices.
To dream that you are on a carousel and unable stop or slow down so that you may dismount indicates disillusionment about the cycle of life and your place within it. Alternatively, you may be experiencing a lack of control and boredom at the repetitive nature of your waking life.
Aurora Borealis 
The appearance of the aurora borealis in a dream symbolizes an uplifting of the spirit and feelings of affection and passion.
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