Jack scanned the area, looking for rocks and anything that might be strong enough to support the weight of the vine and them, he kicked his foot against a boulder, and it moved a little under his weight.

"Hmm," he said, turning back to the Doctor, "no." He shook his head and put his hands to his hips, firing out instructions as though he were talking to his team, "Right, you Doctor start the climb, I'll tie the vine around this boulder and stay up here to make sure it holds. That way I can help too if you need any slack. When you're done then I'll go after you."