The ancient civilizations that walked the Earth had realized at some point that the purpose of life is not only to evolve but also to preserve and spread its knowledge to be passed on to future generations. They accomplished this by writing the information known to them, in stone - a medium known to last the test of time.
Cut to modern day, the Arch Mission Foundation, a non-profit organization founded by American serial entrepreneur Nova Spivak, whose very goal is to preserve humanity's most important data, has come up with a specialized device that holds large amounts of data (think 1000s of terabytes) even in extreme environments. Therefore, it's now possible to save the complete English Wikipedia, which amounts to 30 million+ pages of text and images, on nickel foils and take it to the Moon for safekeeping. How wonderful. Space beings and aliens, are you listening?
The Arch Mission Foundation and Astrobotic (a space robotics technology company) are partnering to land the Lunar Library on Astrobotic’s first mission - the Peregrine Lunar Lander - to the Moon in 2020. Stamper Technology’s NanoRosetta® technology is being used to laser-engrave over 360 terabytes of data on thin sheets of nickel - a metal chosen owing to its properties of being unaffected by temperature variations and radiation on the Moon.
Interestingly, one wouldn't need a high-end computer to read the contents of the Lunar Library. A 1000x magnification optical microscope would be sufficient for the job.
If we look at the human history, we see that information about entire civilizations got lost because they couldn't preserve the archives of information about them and their knowledge in a tangible format to last for several millions of years. Therefore, it's not wrong to call Spivack's mission a great gift to the future archaeologists.