This is what the drainage system in Bali looks like. Each place I visited was riddled with these gaping holes in the ground, and the unsuspecting tourist, looking around at all the sights could easily tumble right in. In fact, I saw that happen one night to a guy I met from Finland named Samu.
We were walking around Ubud at night, and someone said, "watch out for the hole in the ground."
Unfortunately, Samu is a selective listener who chose that moment to zone out and
Straight into the hole.
Thank goodness he wasn't hurt or soaking wet, because I nearly pissed myself laughing at him.