"...But that doggone hill it ain't saying nuffink..."

Well, not in so many words--but it's not exactly hiding, either. It's not as if it were a site in the middle of nowhere, discovered by the intrepid explorer Osmanagic; nor is it the case that no "accredited archaeologists" have ever visited it. The region's archaeological remains (Illyrian, Roman, medieval) have been investigated over at least the last hundred years, and are consistent with the wider European archaeological record. If a big-ass-pyramid-building civilization had been centred in the area, its archaeological footprint would have been recognized long since; and the first people to get excited about it would have been the archaeologists.

More to the point, the area has also been visited/investigated by accredited geologists, who found no evidence to suggest the "pyramid" was anything but a hill. Kat's put up a sticky of the geological stuff, which is pretty riveting reading.

(The simulated dialect: was that Ozarks or cockney? I couldn't quite decide. )