mysterious structure

The Great Lakes Environmental Laboratory (GLERL) of the National Oceanic and Atmospheric Administration (NOAA) has confirmed the existence of about 40 mysterious circular

Unusual seismic data in the Pacific Ocean has revealed a mysterious giant structure that burrowed into the Earth since the time of the dinosaurs.

A structure resembling a bowling alley appeared in the ground-penetrating radar image when surveying the Fountais Monastery in Yorshire (England) that stunned scientists.

The mysterious structure discovered in southeastern Peru in June was answered. The researchers said it was an spider's egg.