Surprise!

Yesterday Tom Goldschmid very kindly offered his truck to take a load of OSB and lumber - salvaged from the old shed we brought down - to John's house. He plans to use it to build a hermitage on their land - a quiet place for contemplation. The OSB had been covered with a tarp during a couple of days of rain, and when we pulled off the tarp, this is what greeted us:

Anyone know the name of this beautiful snake?