State of the art bulldada for your Sunday evening…
It must be understood that the identity of the statues is highly suspect. There were two large guardian Buddhas, with distorted quasi-Chinese features; as many people recollect, Buddha was Indian, and there was only one Siddhartha Gautama Buddha. A strong hint of the eldritch influence over the creation of these stone collossi comes from the fact that the particular emperors which constructed them ruled over the Indian cities of Sarnath and Mathura (which sounds more than a bit like Cathuria.) These were not meant to represent Buddha, but the gods that Barzai espied on Hatheg-Kla before he was snatched up unspeakably by the Other Gods.
Yet Lovecraft himself had interesting things to say about stone collossi, most notably in The Dream Quest of Unknown Kadath. In it, Randolph Carter seeks Mount Ngranek to behold a carven visage of one of the terrestrial gods, in order to find the bloodline of those descended from these immortals. These unusual features, including slanted quasi-Chinese eyes and pendulous earlobes lead Carter to the villages surrounding the forbidden plateau of Leng. Unsurprisingly, this leads us to recognize that within what we today call Afghanistan is the plateau of Leng, the Cold Waste, and somewhere in the most forbidding mountainous regions Kadath itself.