Egyptian pyramids found by infra-red satellite images

From the BBC:

Seventeen lost pyramids are among the buildings identified in a new satellite survey of Egypt. 
More than 1,000 tombs and 3,000 ancient settlements were also revealed by looking at infra-red images which show up underground buildings. 
Initial excavations have already confirmed some of the findings, including two suspected pyramids.

I think it is so cool that there are still so much history that is still left to be discovered. I mean, entire pyramids!