Chine - Tibet railway. Pressurised carriages as top end is at 16,600 feet in Tibet (air pressure about half that at sea level.) http://news.bbc.co.uk/2/hi/asia-pacific/4345494.stm Ref: Matthew McMahon -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist