"That which should not exist". This is an old postcard showing an ancient "Indian Mound" from West Forks Maine. If you paid attention in class you know this can't exist so someone must have traveled back in time and planted this photo. Remember, conventional wisdom is that there was no stonework in the U.S. before Columbus. Look at the scale of the structure and the double chambered entrance. This appears to be some sort of chambered mound or maybe a burial mound. This structure no longer exists. Ignored by professionals, there have been several large burial mounds found in New England. Let's look at an account of a massive burial mound found right after the Revolutionary War in New Hampshire.
"In the present town of Hiram, not far from the mouth of the Great Ossipee river, there is a high bluff upon the top of which there is a nearly level plateau of about two acres in extent where several families of the Sokokis Indians once lived. A peculiar Indian burial mound seventy-five feet long, fifty feet wide and about twenty-five feet high was discovered on the west side of Lake Ossipee and south of Lovewell's river soon after the Revolution. This mound, which is located upon a beautiful intervals is filled with the skeletons of thousands of Indians entombed in a sitting posture and circling around a common center facing outward. These form concentric circles which were added one after another until the outer one was formed when another tier was begun above them. The bodies seem to have been packed closely together and covered with about two feet of coarse sand, while around the foot of the mound were placed stones taken from the river bed to prevent the mound from washing down. This mound is estimated to contain no less than eight or ten thousand skeletons which would seem to speak of either a numerous or a long established race in this locality."