"We can't be," the Doctor said, shaking his head. "It's impossible. Gallifrey's gone, it burned, I watched it happen."

But no, no, a nagging voice in his head told him it was very, very possible. Well, maybe not 'very very', but it was possible. The rift, the past, the timing. If everything just happened to fit in the right sectors of time, it was definitely plausible.

He looked up to the gray sky and longed, just for a moment, for the orange sky he suspected rested just outside of the Zone's interior fields. He never realized how much he missed his home until it was gone.

"There's only one way to find out," he said. "We have to get to the Tower. There'll be plenty of technology in there, we can repair the manipulator and leave. I'll seal whatever gap in the rift we took to get here."

The Tower seemed a very, very long way away. "We'll need to get there first. Keep an eye out. There's a good reason this is called the Death Zone."