Laura Motta's examination of this material has determined that it is ash. Thus, the mix of charcoal and ash reconfirms that this is a dump and suggests that the material originates from cooking or burning activity nearby.

Deposit of white ashy clay-like material, possibly a dump; theories include calcium residue from water, ash, degraded tufo.

soil sample given to Laura Motta for examination in the hopes of identifying what the material of this layer is.