The Pandemonium Creek slide occurred in 1959 in the Coast Mountains of British Columbia, Canada near the valley of the Atnarko River. It was a debris avalanche consisting of 5 million m that travelled about 9 km (5.6 mi) and is thought to have reached speeds of up to 100 metres per second (330 ft/s).
References
- S. G. Evans; John J. Clague; G. J. Woodsworth; O. Hungr (1989). "The Pandemonium Creek rock avalanche, British Columbia". Canadian Geotechnical Journal. 26 (3): 427–46. doi:10.1139/t89-056.
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