There's no debate about the existence of the Ica Stones.  Literally thousands of Ica Stones can be found in a private museum in Peru and elsewhere.  Found in a wide range of sizes, the mystery of the Ica Stones stems from the pictures engraved on them.  The Ica Stone engravings depict an ancient civilization with advanced technologies far beyond the capabilities of our known ancestors according to mainstream archeologists.  Moreover, the Ica Stones include depictions of humans interacting with dinosaurs, an impossibility according to conventional scientific wisdom.  Dating of the Ica Stones hasn't been fruitful because the composition of the stones makes traditional scientific dating methods invalid.  So the debate continues about the origin and authenticity of the Ica Stones.  For more about the Ica Stones story, visit these online resources.