These are the back stairs to Wat Koh Loy in Si Ratcha. It’s an island connected by a bridge to the mainland. I had no idea at the time of my visit that I was actually on an island or that this is a famous wat. What I didn’t know is that after walking up this cliffside stairs that if I had walked around I could have just walked in on a gentle incline. Instead, I took the mountain path up.
I should point out that wat is basically temple in Thai.