Giant Bosnia Sphere

Discovered in a forest near the Bosnian town Zavidovici, the sphere has a radius of between four and five feet, and an “extremely high” iron content. Dr Osmanagic believes the sphere proves the existence of an advanced lost civilization dating back more than 1,500 years ago. According to his colleague Dr. Sam Osmanagich, hundreds of spheres have been discovered in the region, however most were destroyed in the 1970s due to speculation they contained gold. Only eight are believed to still exist. Discussing the Zavidovici spehere, Mandy Edwards of the University of Manchester's School of Earth, Atmospheric and Environmental Sciences told MailOnline the rock may not be man-made at all, and had been formed by the "precipitation of natural mineral cement within the spaces between sediment grains" - a process known as concretion. 

While his claims were mocked by some, the Bosnian government gave financial backing enabling excavations to be carried out in the region. Nedzad Brankovic, Bosnian Prime Minister at the time: “We were told the world was laughing at us … but there is no government in the world that should stay quiet on things which are positive.”

The archaeologist believes an excavation of the region funded by the Bosnian government will reveal his 'Pyramid of the Sun' which he believes could have been built as early as 12,000 BC.

Sources:

http://www.9news.com.au/world/2016/04/12/09/39/giant-bosnia-sphere-may-unearth-ancient-civilisation

http://bimba.info/en/general/2016/04/12/mysterious-giant-sphere-unearthed-in-forest-divides-opinion

http://www.timeslive.co.za/scitech/2016/04/12/Mysterious-giant-sphere-found-in-Bosnia

http://www.voanews.com/content/mht-spherical-rock-stirs-controversy/3282356.html

Pic Source:

http://gdb.voanews.com/B3460124-0E1D-4305-9D63-756A5EB13D09_mw1024_s_n.jpg