Giant Pyramid Built In Area 51! Why?

A gigantic pyramid has been built in Area 51 as shown in the video below from DAHBOO77. Why have they built a gigantic pyramid like structure there in Area 51? Is this MORE PROOF of ‘alien technology’ here in America? Something strange is certainly going on and for some reason, our own government doesn’t want us to know about it. The Google Earth photo below this video shows that this pyramid has been around since AT LEAST 2007! (beforeitsnews.com)