Construction of the 10000 year clock - Alexander Rose (SETI Talks)

it's extremely difficult to build waterproof subterranean buildings, especially if they're built into permafrost (which seems these days to be more like tempofrost). this very long but fascinating video discusses it: ▶ this video

As you probably know, the Long Now foundation has wrestled with the problem of extended time period preservation of physical buildings. In the video linked below, they discuss how ancient people attempted to carry knowledge through the generations. Some of my favorites: the stone markers for the high water mark of Tsunamis, and the temple that is physically rebuilt in exact duplicate every 20 years. ▶ this video

This team should collaborate with the makers of the Clock of the Long Now ( link ), another device intended to last thousands of years. There is a discussion of their research into various methods pursued by different cultures over the centuries to pursue similar goals, see video here: ▶ this video

The Clock of the Long Now: link The lecture on the Clock that I saw was recorded. You can see it here: ▶ this video The remark on the stone in Japan is at about 44:30 into the video.