Time Capsules
Roman Soldiers in Egypt left graffitti on the Pyramids of Giza, usually
naughty in nature. Some things remain the same.
Here is a fun Web site on time capsules, showing how they used to
send messages to the future:
http://www.davidszondy.com/future/timecapsule/timecapsules.htm
Just be sure that if you want your message to be read by the future,
do not bury it below a water line:
http://www.paleofuture.com/2007/09/tulsa-time-capsule-1957.html
Try a mountain in the middle of a desert instead:
http://www.longnow.org/projects/nevada/
