Every now and then I’m going to put up a photo of an Inland Valley sight and challenge you to guess what it is and where it is. You won’t win anything, other than praise on this blog as a sharp-eyed observer — which, come to think of it, doesn’t sound like a bad prize, does it?

Here’s the first one. It depicts one of the valley’s few remaining working phone booths. But where is it located? Start guessing.

To avoid spoiling this for anyone, what I’m going to do is not post any of your comments, or at least not post any of the correct guesses, until Tuesday morning, when the correct answer will be revealed here. So check back.

UPDATE: OK, pencils down. The contest is closed as of 10:22 p.m. Monday, as I’m typing this. This phone booth, as several of you guessed, is at Chino Airport, specifically, just steps from Flo’s Airport Cafe. Congratulations to those who got it right: Annie, Richard Delman and Larry. And to those who got it really right by also naming Flo’s: Bob Terry, Ronald Scott and Scott in R.C. But thanks to everyone for playing.

Sixteen guesses? Hey, we’ll have to do this again!