What the Helen of Troy is This What the Helen of Troy is This? by Prince Of Petworth April 27, 2009 at 10:37 pm 20 Comments DSCN8456, originally uploaded by Prince of Petworth. What did they use this for? Oil? Natural Gas? What time period is this from? This one looks kinda new. Is it really expensive to remove them or is it possible that they’re still used?