Etna Thunderegg Pair

I havent much info about these, save that they come from somewhere in the northwest of Utah near the Nevada border. It is an interesting find though since the only Utah location I had encountered before was the famous Dugway Geode. The shape on this one is an absolutely classic thunderegg form.

For some reason, a neat curve has been ground into the edge of this specimen. I got this from escalanterockshop.com

9cm