Synthetic aperture radar (SAR) satellites, which send out radar pulses rather than relying on ambient light, would pick up the metallic reflections of heightened vehicle activity.
They are there for most often used in specialist structures such as buildings to house MRI hospital scanners where electromagnetic interference from metal can cause problems To get around this.
Heat from the various reactions involved pushes the furnace's temperature above iron's melting point, 1,538 degrees Celsius, and the resulting liquid metal flows out of the bottom of the tower.
So, the other interesting thing about this one is volcanoes can produce platinum, or at least, you know, part of, like, groups of platinum metals, and that could account for that spike we talked about in South Africa.