it must be a sign

One of the many joys of traveling for me has always been foreign signage. Maybe someone can shed some light on what someone was thinking when he/she made this sign. And if you're ever visiting Tikal, you'll want to see the Mayan ruins and all, but be sure to find this sign.So I get the first one, something about not bringing a mace/club with you through doorways that are too small -- it could be misinterpreted by the inhabitants. The third one is also pretty straightforward, don't doodle on the artifacts. Fine.

But the one in the middle must forbid defecating in the wells? Potable water is way more fun.That, or don't sit on the artifacts. But I'd like to believe it's the former. Maybe that's why I'm not an archaeologist. Running around Tikal with my Indy fedora and whip didn't convince many people either...

I still think we'd all be better off taking sign design cues from Guatemala.