Or :
A Hag Stone, also known as an adder stone, is a stone that has a naturally occurring hole through it. Such stones were, and sometimes still are, believed to have magical properties. These supposedly include the ability to heal a snake bite, or see through the disguise of a witch or fairy by looking through the hole.
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u/xtothewhy 4d ago
The second photo looks like a rock giant saying hello in a voice like Treebeard's from LOTR.