On 17 January 1945 the small town of Chavin de Huantar
on the eastern side of Cordillera Blanca was destroyed by an aluvion coming from QuebradaHuachescsa down-valley of Huantsan.
There were many dead (ca. 500) and invaluable archaeological material was lost.
The aluvion could be triggered by a big rock-fall
from Huantsan on the debris-covered glacier at its
foot.
Damage
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There were many dead (ca. 500) and invaluable
archaeological material was lost.
Data source
Lliboutry,
L., Arnao, B. M., Pautre,
A., Schneider, B. (1977): Glaciological problems set
by the contol of dangerous lakes in Cordillera
Blanca, Peru.
I. Historical failures of morainic dams, their causes
and prevention. Journal
of Glaciology, 18 (79), 239 � 254.