>>5122537 (lb)
>>5122128 (lb)
Rock's from Bosnia as it seems:
phys.org/news/2016-04-archaeologist-bosnia-stone-sphere-massive.html
Spheroidal weathering can produce such regular shapes, also concretion:
en.wikipedia.org/wiki/Concretion
Was reading that too just a min ago. Have to say that I don't trust that guy at all.
Has the looks/appearance of one of these guys typical for the lying politician's cast.
His face reminds me of Obama's even.