Why is that man poking a snake with a stick? Perhaps the person in the coffin died of snake bite.
I am currently reading about how central Asian warrior invasions destroyed the central European agricultural civilizations between 6000 and 4000 years ago. They also did their best to detroy the Goddess religions. The snake was one of the Goddess symbols. This is why in the Bible, God denies mankind knowledge, a snake lures woman into partaking of knowledge, and then has her tempting man into the same error. Got to put down those pesky, smart, sexy women and keep them barefoot and pregnant and dumb.
If this is Mithraic, this was a very masculine religion with no place for women. On the other hand the object in the pokers hand looks like the medical cadeucis with the two snakes, so perhaps this is there because the person died of some disease or as a protection in the afterlife??
It’s a mythological scene. I immediately thought “Mithras” (even added that to the keyword as I was posting the topic), but at a second look, I wasn’t sure. The cap is the Scythian / Sarmatian / et al style, but that looks like a caduceus in the hand of the figure on the right. Turns out it’s Mithras (lower right) with a solar deity (upper left), other deities. Snakes, scorpions, and dogs were associated with Mithras in these representations, although the best-known portrayal is Mithras cutting the throat of a bull.