EPISODE
Supervolcano
A volcano in Yellowstone Park suddenly erupts.
14 March 1955, Truro, Nova Scotia, Canada
8 December 1955, Penticton, British Columbia, Canada
22 July 1960, Vancouver, British Columbia, Canada
25 May 1957, Middlesbrough, Teeside, England, UK
31 March 1974, Wrexham, North Wales, UK
13 January 1974, Terrace, British Columbia, Canada
17 February 1952, Southampton, England, UK
4 February 1962, London, Ontario, Canada
20 January 1983, Toronto, Ontario, Canada
1959, Innisfail, Alberta, Canada
9 September 1958, Edmonton, Alberta, Canada
1943
