Thule

Ubbo-Sathla

"It is very old—palaeogean, one might say. I cannot tell you much, for little is known. A geologist found it in Greenland, beneath glacial ice, in the Miocene strata. Who knows? It may have belonged to some sorcerer of primeval Thule. Greenland was a warm, fertile region, beneath the sun of Miocene times. No doubt it is a magic crystal; and a man might behold strange visions in its heart, if he looked long enough."