The Pit
Caves & holes in the ground have sometimes had an ominous connotation. There is a smoldering open pit in the Karakum_Desert that seems quite hellish.
http://sometimes-interesting.com/2013/07/31/turkmenistans-door-to-hell,
http://www.dailymail.co.uk/sciencetech/article-2179622/The-Door-Hell-Giant-hole-Karakum-Desert-40-YEARS.html,
http://www.britannica.com/EBchecked/topic/312099/Karakum-Desert,
http://www.lonelyplanet.com/turkmenistan/sights/desert/karakum-desert
The Trident
Sometimes the trident has been associated with the_devil. The use of the trident_in_companies is a common part of symbolism. One very big development company opened its 1957 HQ at, 666_Fifth_Avenue. They would eventually become involved with the 1960s-1970s WTC development project. The central theme of the project was the twin iconic towers resting on rows of tridents.
After the destruction of the WTC there was a smoldering hellish pile of debris.
http://www.boston.com/bigpicture/2011/09/ground_zero_september_11_2001.html
The entire WTC_site was destroyed, but a couple of its tridents would eventually become part of the 9-11-memorial-museum.
http://www.wtc.com/news/historic-twin-tower-tridents-installed-into-9-11-memorial-museum
http://peeringthrough.blogspot.ca/2008/12/wtc-world-trident-center.html
For more fascinating observations visit, secretsinplainsight.com especially about,
http://www.secretsinplainsight.com/2011/08/13/666 &
http://www.secretsinplainsight.com/2011/09/03/world-trade-center.
http://guestofaguest.com/new-york/real-estate/666-fifth-avenue-and-other-satanic-new-york-real-estate
