The definition of the diptych being two images juxtaposed that tell a story. It might be a contrast, a different perspective...lots of possibilities.
Here are the combinations I put together.
Then and now:
The wind machines on the right are a descendant of the old ones, producing electric power in many parts of the world. These happen to be in South Central Washington. They are in the Goodnoe Hills where wind turbine research took place for many years before the scene shown here became common. We have seen such wind farms in other parts of Washington, in Oregon, and in more than one area of California. We are scheduled for a tour of a wind farm (good Lord willing) this coming weekend and I expect to have some great pictures to share.
Mt. Rainier is infectious, too.
Hmm, a diptych of summer and winter in the same location would be excellent as well. Or of the same plants in different stages
Anemone or Pasque Flower
From a tiny acorn a mighty oak...
If this were a triptych I might have put this oak in the middle.
I wonder how long it had been since it was like the acorn in Antosha's hand. (Antosha is a Russian nickname for Anthony.)
It was a challenging theme. Check out my headbanger friends whose links are in my sidebar. They post anytime up to noon my time on Wednesday.