Por un escritor de hombre misterioso
A 10-foot-wide, stone ball recently discovered in a Bosnia forest is touching off a hot debate in academic circles: Was it created by Mother
The year 1903 marked a discovery that - Science and Space
A huge ball of a mystery has been excavated and announced as a trace of an undiscovered civilization, but the opinion of experts is divided - GIGAZINE
A huge ball of a mystery has been excavated and announced as a trace of an undiscovered civilization, but the opinion of experts is divided - GIGAZINE
Stone spheres of Costa Rica - Wikipedia
Magazine - Guide to Serbia
8 Mysterious Objects That Even Bewilder Scientists / Bright Side
Found: A Massive, Mysterious Rock Sphere in Bosnia - Atlas Obscura
Biggest Stone Ball in Europe just Discovered in Bosnia
Found: A Massive, Mysterious Rock Sphere in Bosnia - Atlas Obscura
A Valley in Kazakhstan Home to Countless Massive Stone Spheres — Curiosmos
File:ParcoursPeel-Sphere2Allochtochtone-Eau-detail1.jpg - Wikimedia Commons
Bosnia's Indiana Jones discovers massive stone sphere
Earthly Mission - The largest stone ball ever discovered in Europe. It was unearthed near Zavidovići, Bosnia, and measures about 3 meters in diameter and weighs up to 60 tons. Read about
100 ancient ruins around the world
Biggest Stone Sphere in Europe Discovered in Bosnia - Is It Natural or Man-Made?