1900 to 1909 Early explorations in Gaping Gill, Swildon's Hole and Eastwater Cavern
1910 to 1919 Sunset, Swinsto, Meregill and Calf Holes in the Dales; Swildons & Eastwater on Mendip; DYO explored
1920 to 1929 First gantry down GG Main Shaft; White Scar Cave discovered; Juniper Gulf bottomed
1930 to 1939 First CPC GG meet; Diccan Pot bottomed; Swildons 1 & 2 dived; Eric Hensler crawls around GG
1940 to 1949 Simpsons/Swinsto connected; Mossdale Caverns discovered; Electron ladders used for first time in UK; Balcombe dives sumps in Yorkshire Dales
1950 to 1959 Explorations in Easegill; Dowbergill/Providence Pot connected; Sump 1 in Gouffre Berger reached making this the first cave over 1000m deep
1960 to 1969 OFD II; DYO II; Tradgedy in Mossdale caverns; Red Rose publish the Lancaster-Easegill survey; Gaping Gill extends to Far Country and Whitsun Series
1970 to 1979 First 300m cave dive; Sid Perou films in Dales; NorthernCaves published; Cowsh Avens in Swildon’s pushed to conclusion; Dive links Ireby with Notts Pot. Wookey goes to 25; Link Pot links Pipikin to lancaster Hole;
1980 - 1989 Martyn Farr passes Far Sump in Peak Cavern; Jean-Bernard gets world depth record; Gaping Gill and Ingleborough Cave connected; Pippikin sump was connected to Gavel/Lost John’s; Red bolts hit he Dales; In Mulu, Clearwater Cave becomes world's 11th longest.
1990 - 1999 CDG celebrates 50th anniversary in Wookey Hole; Ogof Draenen becomes 4th longest cave in Britain; Titan shaft, the largest in Britain was discovered; first British cave dive of over a mile in each direction; Access to the Gouffre Berger was stopped;
Credits Sources and Acknowledgements