AMALUCAN continued Aerial photographof the Amalucanarchaeologicalzone taken in February1955. Photograph,CompaniaMexicanaAerofoto. site and problems for field investigation. One of the features, the subject of this report, was a long, straight, dark line visible on all the aerial photographs and extending from the large mound (number 1) of the central group northeast for approximately 1500 meters. At that point, it blends into a dark irregular line that appears to have been an old stream bed. A closer look at the aerial photographs reveals that nearly per210 pendicular to this straight line and at intervals of about ninety meters is another series of lines. These perpendicular lines are largely on the northwest of the long straight line, although some can be observed on the southeast side as well. Ground reconnaissanceof the area where these lines were visible on the aerial photographs revealed two things. One, the lines could be followed by observing