File:Grand Canyon Hidden Civilization Cover Up

Description
The National Parks Service is desperately trying to keep a secret civilization hidden in the Grand Canyon.

This is most likely one of many entrances to the civilizations that exist deep within the Earth.

Link to - LostFlights.com - http://www.lostflights.com/Grand-Canyon-Aviation/63056-Trans-World/i-bcBgTjb#

Link to National Parks Service Redacted Statement - https://www.nps.gov/nhl/news/LC/spring2011/GrandCanyonREDACTED.pdf