Since the surface of the moon has not changed for billions of years, if a shower of heavy metal meteorites hit a particular area, they would be easy to recover billions of years later.
Nasa's photos clearly show manipulation as if they are trying to hide something in this area. The Japanese orbited the moon several times and took massive amounts of pictures. Strangely enough, in these pictures, 'holding tank' like structures and even tire tracks can be seen.
Since the site is now down, I'm not sure where you can find the pics, but the YouTube video is still up it seems.
The author (a school teacher) details what he saw in original high-res NASA photos. He took the same glossy photos to his class, gave them common magnifying glasses and asked (without saying anything further) the kids to draw what they saw ... they drew the same things he saw.
The photos in those days were only copies of the originals, not the copies of the copies of the copies we see today. (Each iteration loses data and fine details are no longer visible).
Many of the original photos taken then are now lost, miscatalogued, or show signs of razor blade alterations (razor blades were the Photoshop of the day - mid-1970’s).
Some of the things found include X-like structures, some spewing materials; a giraffe-like structure apparently climbing a ‘road’ winding along the inside of a crater; and a bulldozer-like structure.
Also see http://www.youtube.com/user/TheLunarcolony posted recently.
Why do you imagine that the US Navy’s 1994 Clementine lunar high-res mapping images (likely able to resove images down to 1.5 square foot) remains classified? Clementine mapped the entire lunar surface, surface and mineral ... in color ...
(The Lunar Reconnaissance Orbiter Camera (LROC) consists of 2 narrow angle camera heads (NACs) to provide 0.5 m-scale panchromatic images over a 5-km swath, a wide angle camera head (WAC) to provide images at a scale of 100 m in seven color bands, and a common Sequence and Compressor System (SCS) to sequence image acquisition by all camera heads and compress their data before transmission to the spacecraft. )
and why would the US Navy be interested in mapping the moon in the first place?