telescope, some went to northern arizona university and their telescope, and the other went to the naval observatory's flagstaff station, located about four miles from here. in those three groups using three different telescopes, the astronauts each looked through the telescopes to see the moon and where they would be going. in one day, they could see what an actual impact crater looks like, how impact craters are depicted on the map, and what the moon's impact craters actually look like. so the upside is that first trip was very successful. nasa realized the value of training the astronauts to do geology and all the future groups of astronauts that went to the moon came here to flagstaff to train. we are now out in the field, and we are several miles from downtown flagstaff, and not far far from that crater that erected tens of thousands of years ago. this field is made from cinders from that explosion. nasa realized they wanted another place to train, something that was even more accurate or the lunar surface for the craters. in 1968, the usgs, based on an image of the moon, created this crater fiel