Are these the pictures from yesterday? If so the blocks are moved from the actual pit. Link to Greta video from crimescene featured last night:
http://www.foxnews.com/video2/player06.html?012208/012108_greta_livewire&On_the_Record&Greta%20Live%20Wire%3A%201/21&Greta%20Live%20Wire%3A%201/21&On%20The%20Record&-1&Shows&605&&&exp
The cinder blocks seen in the photos above is what the “fire pit” looked like before investigators unearthed Maria and baby’s remains. Whatever Greta was showing was after the excavation.