Mount Cadon
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Mount Cadon was a mountain in southern Gallifrey, tall enough to touch the transduction barrier. The Prydonian Academy was located some distance up Mount Cadon. (PROSE: Timewyrm: Revelation, Lucifer Rising) Related buildings, such as the House of Lungbarrow (near the Cadonflood River), were near it. (PROSE: Lungbarrow) The First Doctor used to climb it while he was young. The Hermit would tell stories to the young Gallifreyans like the Doctor on Mount Cadon. (PROSE: Lucifer Rising)