Alien materials,Artifacts,Wreckage.Your Input Needed.

Ok, i want to devote this thread not to UFO/Alien sightings, but more on the physical evidence out there, crashed saucers,crafts,wreckage etc.
Artifacts would be amazing to see too.

So i will start with a incident in Chile, where a craft scrapped a hillside, leaving some debris behind, but didnt crash.

Intersting read, about the properties of this unidentified material.

www.rense.com...

Whether they are Alien or black projects, i would love to see your researched info on this subject.