In Mexico, there was an earthquake with a magnitude of 6.9 to 7.1
During which there was an Earthquake Light phenomenon. This is when rocks were rapidly compressed, becoming so electrically conductive that they entered a new plasma state.
“And that plasma can break through the earth’s surface and shoot up to 100 metres or 200 metres into the sky.”
@wearestormcaller lightning from the freaking ground.
It was just Thor preventing the Subterraneans from trying to invade the surface again.