Color difference on the stomped region suggests substantial soil moisturealso shows considerable turmoil in the region and also the stones have fallen to form a movement in the soil.
I'm not going to let NASA drop so easily from this therefore I'm going to stir this muddy environment a little the stomped region. There are a lot mote to see on that picture so next post will bring us closer to the true.
This time I'll post a picture that I believe contains very important information. I hope someone has the time or interest to look more closely at it especially the area I have defined and expanded.