LIDAR is ground-penetrating laser that can detect objects underground and under the seafloor. Summary: There’s much, much, much more waiting to be discovered than we dreamed possible.
Image 1: Fort Gadsen, Florida. Invisible from the surface.
Image 2: Tikal, Guatemala. There’s much more below the surface.
Image 3: Unknown building under ocean floor, 137 miles Northeast of Cromer, Norfolk, England.
Image 4: Unknown Grid below ground in Tennessee.
