We found it under a blanket of sand. Here 'a blanket of sand' is an example of ______?

We found it under a blanket of sand. Here 'a blanket of sand' is an example of ______?

Explanation

"A blanket of sand" is a metaphor because it compares sand to a blanket without using "like" or "as".

It suggests the sand is covering something gently or completely, like a blanket would.