I think this may qualify as the oddest image about which I’ve blogged. But, um, wow. It speaks to the power of a simple photograph, although in this day and age, one could be forgiven for thinking that it’s photoshopped. At first glance, you might not even notice the people in the photo, but once you do, the image really plays with your sense of scale.

The photo comes from a landscape architecture blog, via my friend Allison Duncan. Many more pictures show up on the blog. And for more info on the caves, you can also check out the official Naica Caves website or news stories from the BBC and National Geographic.