18:30HP Lovecraft - At the Mountains of MadnessEpisode 4BBC Radio 4 Extra Duration: 30 minutes Thu 5th Jul 2012, 18:30 on BBC Radio 4 ExtraInvestigating fantastic ancient structures high in the Antarctic, Dyer and Danforth face pure terror. Read by Richard Coyle.GenresDramaHorror & SupernaturalSeriesHP Lovecraft - At the Mountains of Madness Source: BBC Online