So, while we were waiting on telephone calls from the owner and the alarm company, I wandered about the property. I usually keep a small camera in my pocket when I'm at work. No one seems to mind the fireman taking pictures of things as long as I'm discreet about it. During my wandering, I found the pool and heeded the warning. I didn't jump.
You could hurt your head... Or, it would seem, step on a nail.