Quotes About Sundials

Using his observations of the different shadows cast by sundials along the same meridian and a little number crunching, Eratosthenes made a calculation of the earth's diameter that was amazingly accurate: 7,850 miles, only about 60 off the actual mark.

You can tell the archaeologists, of course, by their photos. The tourists' photos feature people in front of mountains, terraces, stone structures, sundials. The archaeologists wait until the people move away to take theirs: they want the terrace, the stone wall, the lintel, the human-made thing, all sans humans.