Found "X", again. ds213

Jet condensation trail - contrail - from the jet engine exhaust releasing tiny cloud condensation nuclei, then the moist air in the atmosphere has something to condense onto. Only the vertical bar looks like a contrail. Wierd how the 'x' came through so clearly!

 

2010/06/16: Find the shape of a letter in something around you-- architecture, nature, or anything not in print--and make a photo. #ds213

Done