People,
Supposedly, the Lacross Mission's goal was to scan for water in the dust kicked up by the spacecraft's crash into the South Pole of The Moon.
But Richard C. Hoagland debunked the mission very well on his enterprise Mission site. Hoagland stipulates that because of flash from the crash was seen by observatories, nor from the backyard telescopes of amateurs, that the mission failed and and a façade hoax was put up to cover the truth.
http://www.enterprisemission.com/SmokingGun2.htm
It is an easy read, go for it.
Even modest telescopes can resolve features on The Moon very easily, such as ramps circling upwards along the inner rims of craters. Those ramps can't be more than twenty or thirty yards wide, so if a spacecraft caused even a modest explosion and plume, these would have been seen by at least some backyard telescope on Earth. But no telescope anywhere reported anything.
Liar, liar, pants on fire!
The South Pole of The Moon is the location of one of the egresses that lead into the hollow Moon. The crater Malapert is at the South Pole, and its floor is always dark black because no light reflects off it. Even radar mapping shows no signature because the crater extends inwards, it is an orifice, a hole, a cave which reaches all the way through to the hollow cavity; and the radar has nothing to reflect off of. Look at the dark area just above-right of the center point of the cross hairs on the bottom image. I don't know if that one is exactly Malapert, but it seems to be where the egress is located because it is dark.
http://www.holloworbs.com/lunar_opening_at_malapert.htm
But the official explanation blames smooth ice as a poor reflector.
Dean