Seeing an abyss captures the idea of how you approach the unknown depths within you. An event may have triggered the idea that there is more going on inside than you realized. The abyss can also represent reaching an apex and the need to make changes that make you feel like you may have to go 'down' or 'backwards' in order to continue. It can be a symbolic representation of not having all the facts in order to see clearly. See Valley and Canyon.