Analysis of information sources in references of the Wikipedia article "グリフォン" in Japanese language version.
As to the gold which the griffins dig up, there are rocks which are spotted with drops of gold as with sparks, which this creature can quarry because of the strength of its beak. “For these animals do exist in India” he said, “and are held in veneration as being sacred to the Sun ; and the Indian artists, when they represent the Sun, yoke four of them abreast to draw the images ; and in size and strength they resemble lions, but having this advantage over them that they have wings, they will attack them, and they get the better of elephants and of dragons. But they have no great power of flying, not more than have birds of short flight; for they are not winged as is proper with birds, but the palms of their feet are webbed with red membranes, such that they are able to revolve them, and make a flight and fight in the air; and the tiger alone is beyond their powers of attack, because in swiftness it rivals the winds".
And the griffins of the Indians and the ants of the Ethiopians, though they are dissimilar in form, yet, from what we hear, play similar parts; for in each country they are, according to the tales of poets, the guardians of gold, and devoted to the gold reefs of the two countries.
In Europe, constantly falling snow makes those places contiguous with the Riphaean Mountains.. so impassable that, in addition, they prevent those who deliberately travel here from seeing anything. After that comes a region of very rich soil but quite uninhabitable because griffins, a savage and tenacious breed of wild beasts, love.. the gold that is mined from deep within the earth there, and because they guard it with an amazing hostility to those who set foot there.[33]
