I really don’t know for certain what this structure is. You can see “The Road Map” engraved on the edge of the surface on the right, and “Hide the Children” above the tunnel. This worries me a little… why do we need to hide them??
I really enjoy the textures created here, highlighted by the sunlight that day, as well as the ‘hands’ silhouetted on the tiled surface. It’s a tad eeire, but I love it. I just wish I had had the time to find out more.