Whatever reason you might have for romping over a lunar landscape, here are two giant areas in almost photo-realistic detail all ready for you to leave your footprints on.
Both feature a mix of large and small craters and some rough terrain - and if you find depth perception difficult in a top-down view, try the old astronaut trick of visualising the sun and what direction it is shining from, and you will find that the shadows all begin to make sense and you can see the depth after all. (This is, if you're interested, what Apollo astronauts were trained to do when looking at lunar photographs.)
Single page versions of both maps and instructions for printing and organising them are tucked away at the back of the PDF. Both maps have a hex overlay, and you can determine an appropriate scale given the size of whatever miniatures you intend to use.
There are no structures anywhere, so those wishing to brawl can do so without worrying about collateral damage, and those wishing to explore can enjoy what might easily be virgin territory. So, be this Earth's Moon or some other airless cratered world that you have encountered in your travels, enjoy....
... and remember, in space nobody can hear you scream!