Difficult to explain with other theories (such as Plate Tectonics, Catastrophic Plate Tectonics, other theories on the origin of the solar system), easy to explain via Hydroplate Theory
The blue areas in this composite image from the Moon Mineralogy Mapper (M3) aboard the Indian Space Research Organization’s Chandrayaan-1 orbiter show water concentrated at the Moon’s poles. Homing in on the spectra of rocks there, researcher found signs of hematite, a form of rust. Credits: ISRO/NASA/JPL-Caltech/Brown University/USGS 12
It's really close to the near side impacts, and just barely on the far side of the moon. Scientists are puzzled (again) because they ignore the Hydroplate Theory: