I made a demo for the long-heralded Atlas of the Black Hills Landscape. It’s an example of how a photo layer should behave, with panoramas linked geographically and chronologically.
Look around; there’s one location with selective rephotography of a cultural landscape and one that’s more natural with (a la John Wesley Powell) prephotography at centifluences.
It’s in progress; I still have to rig up some Landsat images of the Crow Peak fire, and we appear to be missing Ladybug Rock for some reason. One would obviously scale this up in a more automated way; these I made by hand.
For more on this topic, watch the two short videos here.