FOUND: Door standing in Velder Park. No wall. Just a door. (Velder Park)

Found a white six-panel door standing upright on the east trail near the old footbridge. No frame, no wall. Just a door, standing there. Brass knob. It opens and closes. I know because I opened it, which in hindsight I should not have done. What was on the other side wasn't dangerous. It just wasn't for me. I don't want to talk about it. Closed it, walked home. Been there since at least last Thursday and parks department says it's not theirs. If it's yours, come get it. I walk this trail every morning and I would really like it to stop being open every time I get there, because I keep closing it and it does not stay closed.