/ #maps 

Archival photo showing a model of a mushroom cloud detonating in Cold War-era Ottawa

Seen on the Canadian Civil Defence Museum Association web site : ”Ottawa Atom Mushroom Cloud Model Used in Canadian Civil Defence Course”.  Yikes.

[

](http://ottawastart.com/wp-content/uploads/2014/04/Ottawa-Ground-Zero-web.jpg)

**

**

(Thanks @koolie62 for the tip!)

**

** ** See also: ** Ottawa History Guide

If you liked this post, you should ** subscribe to etcetera , ** our free email newsletter. Featuring cool Ottawa events, interesting local news and contests and giveaways. Thanks!