They also usually use some weasel words like “up to.” That way, if it doesn’t last the full 72 hours (which it won’t), they can claim that they stated “72 hours MAXIMUM” rather than just “72 hours.” It’s basically shifts the statement from “lasts three days” to “definitely won’t last four days.”

It also doesn’t really look like a pool on Google maps - it’s got sandy beaches, rather than walls with stepped/ramped entrances.

Even when that one opens, I’d argue that OP posted the largest pool, and this is more of an artificial pond.

You’re fine - I grew up in a rural state, and I thought they were super rare until I lived in a city where the public transit system gave them as change.

It’s pretty easy to break water down, but it’s also super easy to make it - just burn anything organic.

Usually you can’t see the water being formed, but there’s actually a really common example: car exhausts on a cold day. If you notice a bit of water dripping out of the tailpipe of the car in front of you at a red light, that’s actually the moisture in the exhaust fumes condensing on the cold tailpipe.