goosef. >> what are you looking at here? >> everything that lives here lives in the soil, mostly the animals that live here, but also the micros that the animals eat off of. this is a marker to tell us to stay on these trail. these soils so sensitive, if we walk off the trail, we can jack up the soil organisms. like that guy. >> they thought these soils were sterile, but we disspelled that myth. when the streams flow -- why does this area look like this? why it's like this? >> the polar plateau where most of the ice accumulates starts to spread out. but the mountain form a barrier of the ice sheet hits the mountains and can't get through. the other thing there are these