It arrived at the Smithsonian 16 years ago, a heavy package with no return address. Inside: an unsigned letter and a large hollow skull made of milky crystal. The package was addressed to the ...
Introduction: on the trail of crystal skulls -- Caveat emptor -- Between old world and new -- Mexico: ancient to modern -- Mexico at mid-century -- The Emperor's antiquarian-a collection takes shape - ...
Could the crystal skulls be more than ancient art could they be evidence of alien contact? From mysterious origins to ...