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Abstract: Many global catastrophic risks are threatening human civilization and a number of different ideas have been suggested as to how to prevent them or survive. But in case these interventions fail, society could preserve information about the human race and human DNA samples with hope that the next civilization on Earth will be able to reconstruct Homo sapiens and our culture. In this article, we explore possible ways to cost-effectively send a large amount of information far into the future. We also discuss the importance of the future civilization discovering the information as early as possible, so the message should be accompanied by a beacon, which increases visibility. We suggest a mechanism, where information is preserved under the surface of the Moon, and the beacon is constructed from a complex geometric figure drawn by small craters around a central point. Longer messages could be drawn on the surface of the Moon by cratering (up to several megabytes long), so they could be read by earlier civilization using telescopes. We discuss other solutions with different budgets and time for preservation, including use of radiological waste dumps inside cratons on Earth or attaching small information carriers to every interplanetary spacecraft we send. To assess the usefulness of the project we explore the probability of a new civilization appearing on Earth and mutual benefits of sending such a message to it, such as preventing global risks.