the curious rock, under-earth found;
there's not a lot like it, try to understand,
look at the following - it's a lesson plan.
You see the piece called volcanic neck?
that's what we have now, volcano blown to heck,
wait until you see the 'trail' left by the eruption then,
what's left now is a large crack, filled in - not by men.
go to - www.emporia.edu/earthsci/student/kuss1/shiprock.html for more info. I really like this place.