The Galactic Keyhole

The mysterious symbol of the keyhole exists in mystic texts, sacred architecture and ancient artwork found all over the planet. Could this cryptic shape represent a profound connection to the cosmos? And is it a clue that was left behind by extraterrestrials who visited Earth thousands of years ago? See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.