GEORGETOWN, Calif. — Deep within the Eldorado National Forest, there’s a smaller forest. From the sky, it looks like crop circles or maybe a strange forest vortex. On the ground it gets stranger. Each tree is marked with identifying metal dog tag.  This strange place is known as the Blodgett Forest — home to circular-shaped Nelder plots. …Data collected from plots like these will help loggers and foresters properly re-plant baby trees without killing them or stunting their growth. …If you are interested in seeing the experiments at the Blodgett Forest, there is an interpretive trail open to the public year-round for absolutely free!