Some folks delight in vertical movement, some just want to get from A to B and never will the twain meet except when their path briefly cross at the origin.

Train life... Cool observation... ????? · 2009-08-28: 18:00

it took me some seconds to see the "blue one", looks unreal and the idea is great. Pikapol · 2009-08-29: 03:09

Radiation ????? · 2009-08-29: 03:51