Gigapixel photos

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Hello everyone. Another interesting thing that i found (long time ago, actually) in the internet and want to share.
This is a gigapixel photos. Dont know, maybe its a well-known thing. But if you never have seen them before, check them out! They are so detailed, you can spend hours looking at various things, pictured on them.

Here are a few links:
http://www.gigapan.com/
http://360gigapixels.com/
http://en.wikipedia.org/wiki/Gigapixel_image (there are good links there)

Google for more.