"Of course. I can't let my archenemy abduct ancient Viking warriors for some unknown nefarious purpose," he said before groaning in pain as he hoisted himself to his feet and stretched his arms high above his head. "I don't know what time traveling heroes you've been hanging out with Robin, but if I see my archenemy stealing viking warriors for nefarious purposes, then I'll stop them."<br/><br/>He crossed the floor and helped Robin to her feet before walking to the doors and pushing them open slightly. He poked his head out the door, little by little, preparing himself for the worst. With any luck he wouldn't need to immediately dive back into the TARDIS in order to avoid the blast of a Dalek cannon.<br/><br/>His breath caught in his throat when he looked at their surroundings. His eyes bulged in their sockets and his mouth dropped as he looked up at one of the most amazing sights he had ever seen.<br/><br/>The ground that the TARDIS was perched on was a solid rock cliff face that led up to a dense forest which surrounded the base of a humongous mountain, almost twice the size of Everest. It was an breathtaking sight, but that wasn't what amazed the Doctor. What stunned him was what was growing out of the mountain.<br/><br/>"I don't believe it..." he whispered. "....that's a Gaia Tree," he said with awe, looking up at the gigantic mass of branches and leaves that towered stretched over there heads thousand upon thousands of miles in the air above them. In the distance they could see a great tree trunk sprouting from the top of the mountain, it's bark the color of granite and surface riddled with bumps and grooves that probably resembled the Grand Canyon up close.<br/><br/>"And someone's been building something into it," the Doctor said before pointing up at the base of the tree.<br/><br/>Sure enough, a mass of buildings lay at the bottom of the tree, nestled within it's roots. It was tiny in comparison to the rest of the great tree, but yet it still managed to make its presence known by shining brightly in the light as the sun hit it's silver walls.<br/><br/>"And look, they've got visitors," the Doctor spat before pointing at the swarm of blue machines that flew through the sky in the far distance.