Early Russian and American lunar probes, such as the 1966 U.S. Lunar Orbiter 2, took photos showing strange spires on the moon. One scientist from NASA said that they looked like an "array of antennae." Other pictures show a remarkable series of domes that appear to be about 1,500 feet high and two to ten miles wide.

On March 21, 1996, a grass-roots space research group under the aegis of Richard Hoagland's The Mars Mission, held a press briefing at the National Press Club in Washington DC. The group had called the conference to report on analyses of 30-year-old "suppressed Evidence" revealing alleged manufactured artifacts on the moon.

The suppressed evidence consisted of a series of photographs showing unusual structures taken by various lunar probes and Apollo missions. One anomaly, referred to as "the Shard," is an obvious structure which rises above the Moon's surface by more than a mile. The amount of sunlight reflecting from parts of the Shard indicates a composition of crystal or glass rather than lunar rock.

Another anomaly is called "the Castle," and was photographed in 1969 hanging seven miles above the lunar surface by Apollo 10. The Castle seems to have a definite structure, like the remnant wall of some ancient building. The bottom looks as if it has rows of columns that support a high spire. Whatever it is, it's much brighter than the surrounding landscape.

Hoagland insists that there are other intriguing photographs of strange moon anomalies that are currently hidden deep inside the NASA safes. Hoagland speculates that this information is being kept secret because NASA feels the public is not yet psychologically ready for the implications that the moon may have been visited by intelligent life whose origins are somewhere other than planet Earth.