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| Wilma Woodchuck | profile | all galleries >> Wild West Wanderings >> Seattle, Washington | tree view | thumbnails | slideshow |
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 Underground Tour |
 Underground Tour |
 Underground Tour |
 Underground Tour |
 Underground Tour |
 Underground Tour |
 Underground Tour |
 Underground Tour |
 Underground Tour vault lights, which are essentially skylights of glass |
 Once clear glass the manganese in it, exposed to UV rays for long periods of time, photo-oxidizes & turns purple |
 Smooth top of vault lights on sidewalks |
 Under side glass is shaped into prism forms that diffuse and bend the light so it reaches the inner areas of underground spaces |
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