© UnknownNestor Rivoira standing in the dead center of the strange marks that appeared near his property in Arroyo Leyes, Santa Fe, Argentina
Nestor and Sara were asleep at home when "a very loud report" woke them up. Hours later, they found strange holes in the ground; experts are looking into the case.
The event occurred on January 14 at approximately 3:00 a.m. while the owners of the property, Nestor Rivoira and Sara Fernandez, his wife, were asleep. It lasted for ten minutes.