Overview
Gaping Gill Every year high in the Pennines local cavers build a dam to divert a stream and Britain's largest subterranean cave reveals its secret for just three weeks. Peter reports from 104 metres below the earth's surface at the bottom of Gaping Gill.
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17 - 1Episode 1 September 08, 1980 -
17 - 2Episode 2 September 11, 1980
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17 - 3Episode 3 September 15, 1980
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17 - 4Episode 4 September 18, 1980
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17 - 5Episode 5 September 22, 1980
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17 - 6Episode 6 September 25, 1980
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17 - 7Episode 7 September 29, 1980
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17 - 8Episode 8 October 02, 1980
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17 - 9Episode 9 October 06, 1980
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17 - 10Episode 10 October 09, 1980
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17 - 11Episode 11 October 13, 1980
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17 - 12Episode 12 October 16, 1980
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17 - 13Episode 13 October 20, 1980
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17 - 14Episode 14 October 23, 1980
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17 - 15Episode 15 October 27, 1980
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17 - 16Episode 16 October 30, 1980
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17 - 17Episode 17 November 03, 1980
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17 - 18Episode 18 November 06, 1980
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17 - 19Episode 19 November 10, 1980
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17 - 20Episode 20 November 13, 1980
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17 - 21Episode 21 November 17, 1980
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17 - 22Episode 22 November 20, 1980
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17 - 23Episode 23 November 24, 1980
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17 - 24Episode 24 November 27, 1980
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17 - 25Episode 25 December 01, 1980
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17 - 26Episode 26 December 04, 1980
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17 - 27Episode 27 December 08, 1980
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17 - 28Episode 28 December 11, 1980
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17 - 29Episode 29 December 15, 1980
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17 - 30Episode 30 December 18, 1980
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17 - 31Episode 31 December 22, 1980
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17 - 32Episode 32 December 29, 1980
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17 - 33Episode 33 January 01, 1981
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17 - 34Episode 34 January 05, 1981
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17 - 35Episode 35 January 08, 1981
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17 - 36Episode 36 January 12, 1981
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17 - 37Episode 37 January 15, 1981
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17 - 38Episode 38 January 19, 1981
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17 - 39Episode 39 January 22, 1981
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17 - 40Episode 40 January 26, 1981
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17 - 41Episode 41 January 29, 1981
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17 - 42Episode 42 February 02, 1981
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17 - 43Episode 43 February 05, 1981
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17 - 44Episode 44 February 09, 1981
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17 - 45Episode 45 February 12, 1981
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17 - 46Episode 46 February 16, 1981
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17 - 47Episode 47 February 19, 1981
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17 - 48Episode 48 February 23, 1981
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17 - 49Episode 49 February 26, 1981
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17 - 50Episode 50 March 02, 1981
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17 - 51Episode 51 March 05, 1981
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17 - 52Episode 52 March 09, 1981
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17 - 53Episode 53 March 12, 1981
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17 - 54Episode 54 March 16, 1981
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17 - 55Episode 55 March 19, 1981
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17 - 56Episode 56 March 23, 1981
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17 - 57Episode 57 March 26, 1981
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17 - 58Episode 58 March 30, 1981
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17 - 59Episode 59 April 02, 1981
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17 - 60Episode 60 April 06, 1981
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17 - 61Episode 61 April 09, 1981
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17 - 62Episode 62 April 13, 1981
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17 - 63Episode 63 April 16, 1981
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17 - 64Episode 64 April 23, 1981
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17 - 65Episode 65 April 27, 1981
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17 - 66Episode 66 April 30, 1981
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17 - 67Episode 67 May 07, 1981
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17 - 68Episode 68 May 11, 1981
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17 - 69Episode 69 May 14, 1981
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17 - 70Episode 70 May 18, 1981
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17 - 71Episode 71 May 21, 1981
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17 - 72Episode 72 May 28, 1981
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17 - 73Episode 73 June 01, 1981
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17 - 74Episode 74 June 04, 1981
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17 - 75Episode 75 June 08, 1981
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17 - 76Episode 76 June 11, 1981
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17 - 77Episode 77 June 15, 1981
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17 - 78Episode 78 June 18, 1981
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17 - 79Episode 79 June 22, 1981
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17 - 80Episode 80 June 25, 1981
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17 - 81Episode 81 June 29, 1981
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17 - 82Episode 82 July 20, 1981