At 11:57 PM on 12 March 1928 and then cascading into 13 March, the St. Francis Dam, north of Los Angeles, failed. Designed by William Mulholland, the man who was hailed for bringing water to the City of Angels, there is another dam, designed exactly the same, still in existence in the city of LA.

The slideshow below details the Cascades that led to this disaster and what we can learn from them.

The book, Stuff Doesn’t Just Happen: The Gift of Failure 2, in which this is one of seven events covered, is free 3/12 to 3/15 here.