It was dusk when the car pulled into the campground. It stopped near the information board, and I walked over to find out if the folks inside were looking for a camping spot. Three young women got out of the car. They seemed to be in their mid 20s.

I asked if they were looking for a campsite. They said they were.

I told them the price to camp ($20) and gave them the rundown on the campground’s lack of amenities: no water, no electricity, no hooks-ups of any kind. (I find it better to tell people right up front what we don’t offer so there’s no disappointment after the fee has been paid.)

After I said, No water, one of the women asked if the campground had restrooms. I told her there were pit toilets.

She asked, How do they work?

I was flabbergasted. I guess she’d never before encountered pit toilets, but don’t the phrases no water and pit toilet paint a pretty clear picture? Apparently not.

I hemmed and hawed and sputtered, unsure of how to answer in a polite and nongross manner. The question caught me completely by surprise. I realize now I should have said, There’s a hole with a plastic toilet over it. Waste material goes into the hole. When the hole gets full, the waste products are pumped out.

This is a pit toilet. It works thanks to gravity.

The next day when I saw my co-worker, I told him the story of the young woman who wanted to know how the pit toilet worked.  He provided me with a succinct, elegant answer: Gravity.