The humming stone

Sticking your head in the hollow and finding the right resonance for your body by humming at different pitches until you find the right wave length that resonates with your body. That was the experiment and purpose of this stone!

We were all quite sceptical but when tried out it is quite eerie when you do find the right resonance! You can feel your body vibrate all the way to your toes. And the pitch was different for all of us.