Sparta Earthquake of 464 BC and the Helot Uprising

In my last post, I noted that Urbainczyk claims that many of the more successful revolts coincided with the slaves' masters being at war.  Thucides writes that:

The Helots (a slave class) and Perioeci (free, noncitizens of Sparta) of Thouria and Aithaia took advantage of the earthquake to revolt and establish a position on Ithome.


Sources:
Thucydides, 1.101, 2.

More on the Helot Uprising to come...