The Ouroboros is a Greek word meaning “tail devourer,” and is one of the oldest mystical symbols in the world. It can be perceived as enveloping itself, where the past (the tail) appears to disappear but really moves into an inner domain or reality, vanishing from view but still existing.
Mark Smith asked me if I was familiar with the term ouroboros. I replied, “No.” So he sent me this link.
This symbolizes the cyclic Nature of the Universe: creation out of destruction, Life out of Death.