A few unexpected twists have popped up in the plan to begin harvesting geothermal energy from the ground beneath Vail, including where exactly that is to occur. The Town Council on Tuesday learned that the best site is actually not the backyard of the library, as originally envisioned, but the nearby parking lot known as Lot 10, which is across from the library to the east of Dobson area. That’s according to the town’s engineering partner on the…