the underground world of groundhogs

There is a park down the street from my home with a creek that literally cuts the park in half.  Bone dry most of the year, when it does rain here in North Texas it doesn't play, and the creek fills up with water fast.  The creek bed is rock and fine sand and the flash flood currents that have happened again and again and again over the years has ripped away the grounds around the trees that have grown up beside the twisting, turning path of the creek.  The result is a sneak peak at the root system of trees half a century old-give or take.  Another result is my interest in these tree roots.  For some reason I find them so completely interesting.