I met Mark in Penn Station on Friday, as I was passing through the New Jersey Transit waiting area. It was a rainy, unseasonably warm day, so I spotted his tattoos easily, as he sat in a short sleeve shirt waiting for his train.
Mark has six tattoos in all, and he shared this one on his left forearm:
There's a lot going on here, in this tattoo which was completed in two sittings.
In essence, this is a religious tattoo, which Mark considers an expression of his Christian faith.
The base of the tattoo may look familiar, as it resembles the caduceus, which is now a symbol of the medical profession.