15 Unsolved Mysteries That Cannot Be Explained

15 unsolved mysteries that cannot be explained. Unsolved mysteries that can not be explained. The mysterious Malta tracks. The prehistoric cart ruts of Malta remain one of the Mediterranean's most fascinating archaeological mysteries. Carved directly into the islands' limestone bedrock, these deep parallel grooves stretch across hillsides, intersect one another in intricate patterns, and in some locations even continue toward the sea before disappearing beneath the water. So, what do you make of these 15 unsolved mysteries that cannot be explained. Thank you for watching! Thank you to CO.AG for the background music!