Stone relief: moth and ouroboros.
I found the photo on Wikimedia Commons. It belongs to Sascha Grosser. There's no location info, but I believe it's from around Münsterland, North Rhine-Westphalia, Germany. It's likely from a gravestone.
Based on the funerary use of the ouroboros, the dating points to the late 18th or 19th century. The ouroboros started appearing in both Christian and Jewish cemeteries in the late 18th century, symbolizing the endless cycle of life and death, and rebirth emerging from destruction; its use faded out toward the end of the 19th century. For example, the headstone of John White (1764-1838) at Biggin Cemetery in the American South is a concrete example of this (Berkeley County Museum).
Let's look at the center. A moth/nocturnal butterfly. In funerary art, the butterfly symbol isn't strictly limited to daytime butterflies; nocturnal ones were also used to depict the soul leaving the body, metamorphosis, and the transition from earthly life to the afterlife. The fact that the Ancient Greek word psychē can mean both 'soul' and 'butterfly or moth' forms the ancient linguistic foundation of this symbolic connection.
In the Vanitas tradition, insects remind us of the transience of life and the perishability of the material world. The sense of mortality conveyed by the moth doesn't contradict the idea of eternity represented by the surrounding ouroboros: the winged insect signifies transformation, while the closed serpent ring expresses the continuity within this transformation. So, the two motifs together illustrate the transition between the end of physical life and the continuation of the soul.
Sascha Grosser - Motte in Stein, CC BY-SA 4.0, Wikimedia Commons: https://t.co/CVJEFdUS0X