Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
Having passed through a wormhole to the planet, the Tenth Doctor explained that the "sand" on San Helios was in fact the waste left by the Swarm after they laid waste to everything on the surface. The Doctor tasted this "sand" and was able to judge its composition by doing so. (TV: Planet of the Dead)