This is a KMZ of the Newark Earthworks created by Sean Chaney using the 1862 map by Newark residents James H. and Charles B. Salisbury as the basis. (Please don't share these files with Friends and colleagues; it helps keep the site free and helps for future research.) It took me about a year to create this back around 2010, using the 1862 Salisbury map as a reference and LiDAR to help trace and find remnants. The Square, large oval, and parallel walls are approximations of their locations. Once purchased you are limited to five downloads. Thank you!