What type of literary device is the earth was like iron?

The phrase "the earth was like iron" is an example of a simile.

Here's why:

* Simile: A simile is a figure of speech that compares two unlike things using the words "like" or "as".

In this case, the earth (a natural element) is being compared to iron (a metal) to convey a specific image or feeling. It suggests that the earth was hard, unyielding, and possibly even cold and unforgiving.