Gravity pockets were known to cause slight turbulence and tremors. (TV: The End of the World)
Tremors could be cancelled out by a cancelling wave. (AUDIO: The Sonomancer)
Tardis
Tardis
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Gravity pockets were known to cause slight turbulence and tremors. (TV: The End of the World)
Tremors could be cancelled out by a cancelling wave. (AUDIO: The Sonomancer)