What did I find in Cave of Reverse Heart in Sardinia Italy? Secret Revealed

Cala Luna beach is officially one of the most beautiful beaches in the world, and we had the chance to see and play chess in the Cave of the Reverse Heart. Please look at this video, so we can share this unique experience with you!
Hidden key storage box opening, secret revealed.
The wooden puzzle box used in this video you will find on magicpuzzlebox.com
Thanks for watching!