 First we visit meteor crater, which is a big hole in sedimentary rock |
 an illustration of a fragment |
 scattercones aqssociated with impact |
 but volcanic mountains are within sight |
 we go over to sunset crater |
 and see millenium old remnants of a volcano |
 nice dead tree |
 lessons |
 a pose |
 more lessons |
 a tube |
 checking out the flow |
 such studious students |