In early 1970, the U.S. Geological Survey used 71,000 pounds of explosives to create 366 craters on Prescott National Forest near Cottonwood, Ariz., to simulate the surface of Fra Mauro, the proposed Apollo 14 landing site on the Moon.

The National Aeronautics and Space Administration (NASA) brought the Apollo 14 crew to the site in November, 1970, to navigate the craters, some as deep as 50-feet, and practice tasks like collecting samples of lunar rock and dust, photographing the terrain and sending back descriptions.

During simulation, astronauts Alan B. Shepard (one of the original Mercury astronauts) and Edgar Dean Mitchell "landed" on the Lunar surface and Stuart A. Roosa manned the command module in orbit around the Moon. For the simulation, Shepard and Mitchell pulled around what Mitchell described as a "portable work table" to gather samples. Roosa and NASA commanders sent messages to the crew from the Manned Spacecraft Center in Houston.

On January 31, 1971, the Saturn V rocket carrying the Apollo 14 crew lifted off from Cape Kennedy for a nine-day journey to the Moon and back. The astronauts were the last to be quarantined on their return (formerly a standard practice). Manned flights to the Moon ended a year later.