t’s very fine but also quite so tering urned ter into an undrinkablegray sludge. It couldn’t  all.”

    tary ed t tence of so muc, Nebraska’s s  for a long time. Foralmost a century to make  andAjax. But curiously no one  to wonder whe ash came from.

    “I’m a little embarrassed to tell you,” Voor t I tabout it  tional Geograpo confess t I didn’t know. Nobody knew.”

    Voor samples to colleagues all over tern United States asking if t it t ter a geologist named BillBonnic in toucold  tc from a place called Bruneau-Jarbidge in sout Ida tkilled t big enougo leave an asen feet deep almost a tern Nebraska. It turned out t under tern United States t spot, aclysmically every600,000 years or so. t sucion  over 600,000 years ago. t spot isstill t Yelloone National Park.

    e knotle about  is fairly remarkable tot Ford  t tinents moveabout on tion.

    “Strange as it may seem,” e Ricand tribution of matterin terior of tter tand terior of th.”

    tance from to ter is 3,959 miles, w so very far.

    It ed t if you sunk a o ter and dropped a brick into it, it ake only forty-five minutes for it to  ttom (t t point it  rat).

    Our otempts to penetrate to indeed. One or to a dept most mines on Eart a quarter of a mile beneat  yet even come close.

    Until sligury ago, -informed scientific minds kneEarterior  muc a coal miner kne you could digdoance and t rock and t  it. t named R. D. Oldemala, noticed t certain srated to a point deep an angle, as if tered s