Snowdonia was a national park in Wales.

Years before 2010, the spaceship of the Shedagen crashed on Snowdonia. They stayed there until they died while the last one of the Shadow People took care for them.

In 2010, the Park Vale Comprehensive School organised a geographie field trip to Snowdonia. They wanted to go camping for a week. Luke Smith, Rani Chandra and Clyde Langer were also going to the field trip, but they missed their bus, so Sarah Jane Smith had to bring them there. However, the school bus and Sarah Jane's car both broke down in Snowdonia and they met the last one of the Shadow People. He wanted the class to stay, but Sarah Jane convinced him to let the students go. (AUDIO: The Shadow People)

Mount Snowdon was located at the Snowdonia national park. (PROSE: Death of the Doctor)

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