[s0e13] - Planet Of The Dead

The bus crashed down onto the wet asphalt of a London tunnel. Police sirens wailed in the distance. The passengers cheered, weeping with relief.

He looked at her, the golden London sun setting behind him. "Not today," he said, though his hand trembled slightly. "But soon." [S0E13] Planet of the Dead

"Then we close it," Christina said, pulling a set of high-tech tools from her pocket. "I was planning on stealing the Cup of Aethelstan today. Closing a dimensional rift seems like a fair trade." The bus crashed down onto the wet asphalt of a London tunnel

The Doctor stepped off the bus, looking back at the shimmering air as the rift snapped shut. He had saved the world again, but as he watched Christina being led away by the police (only to make a daring escape using a jetpack), his expression saddened. He looked at her, the golden London sun setting behind him

: The desert of San Helios serves as a grim reminder of how quickly a thriving ecosystem can be destroyed.