By Tobias Carroll Unearthing the archaeological history of certain regions is far easier than it is for others. When it comes to the Amazon rainforest, things are especially fraught — after all, the complex ecosystem makes it nearly impossible to do much in the way of digging or searching for evidence of a civilization buried just underground. Though, as a recent Smithsonian Magazine article notes, it hasn’t stopped many archaeologists from trying. What do you do when you can’t explore from the ground? A paper recently published in Nature outlines one viable workaround — taking to the skies. T…