World's Deepest-Living Land Animal Is A . . . . . Ringworm!

It seems as though some worms have crawled down to where no other land animal dares to tread or should we say wriggle - 2.2 miles below the surface of the Earth. Earlier this month, scientists discovered a new species of roundworm dubbed Halicephalobus mephisto or 'devil worm' inside the goldmines of the Witwatersrand basin, near Johannesburg.